scenario based informatica interview questions

If you have multiple source qualifier transformations connected to multiple targets, you can specify the order in which the integration service loads the data into the targets. Informatica is a very important tool used in data warehousing, which helps in managing large amounts of data and reporting the analysis of data. RTR – Router transformation two groups JEE, Spring, Hibernate, low-latency, BigData, Hadoop & Spark Q&As to go places with highly paid skills. This would enable them to brush their knowledge about Informatica … When you are interviewing for an Information Technology (IT) job, in addition to the standard interview questions you will be asked during a job interview, you will be asked more focused and specific technical questions about your education, skills, certifications, languages, and … ... Ans: Specify the target load order based on source qualifiers in a mapping. Then connect next_val from expression to customer_id column of target. Explain the different kinds of Facts. It is added close to the source to filter out the unwanted data early and maximize performance. We will need two joiners. Router transformation possesses three types of groups - default, input, and output. What are the types of Caches in lookup? Question 6: You’ve … Data should be sorted before applying join whenever possible. Union Transformation is a multiple input group transformation and it has only one output group. Differentiate between Router and Filter Transformation? Details Last Updated: 22 October 2020 . 95 Advanced Informatica MDM Interview Questions For Experienced. The different types of dimension tables are explained in detail below. Here, the Sales fact table is a fact table and the surrogate keys of each dimension table are referred here through foreign keys. Hence it is an Active Transformation. According to research Informatica has a market share of about 29.4%. 25. But still you can get the number products sold over a period of time. Course content. © 2020 - EDUCBA. These 20 situational interview questions/answers show the right/wrong way to handle hypothetical situations. by ThinkETL November 6, 2020 November 6, 2020. Why update strategy and union transformations are Active? The follow informarica scenarios will be useful for attending interview also to practice for handling different scenarios in day to day office work. A. Once determined how to treat all rows in the session, we can also set options for individual rows, which gives additional control over how each rows behaves. Update as Update: – Update each row flagged for update if it exists in the target table. Explain about Live data and Staged Data? You can go through that Scenario based Informatica Interview Questions blog by clicking on the hyperlink or by clicking on the button at the right hand corner. Non-additive facts are facts that cannot be summed up for any of the dimensions present in the fact table. 2. The target structure is also the same but, we have got two tables, one which will contain the NULL records and one which will contain non NULL records. Suppose the flat file in consideration has below data: After this assign this variable port to output port. In expression transformation make two port, one is “odd” and another “even”. In the previous blog of Top Informatica Interview Questions You Must Prepare For In 2020, we went through all the important questions which are frequently asked in Informatica Interviews.Lets take further deep dive into the Informatica Interview question and understand what are the typical scenario based questions that are asked in the Informatica Interviews. How do you load more than 1 Max Sal in each Department through Informatica or write sql query in oracle? Thanks for posting one more useful blog. The newly added sequence port should be chosen as Rank Port. Thereby with proper configuration, we can also filter out some rows. I have two different source structure tables, but I want to load into single target table? By closing this banner, scrolling this page, clicking a link or continuing to browse otherwise, you agree to our Privacy Policy, Cyber Monday Offer - Informatica Training (7 Courses) Learn More, 7 Online Courses | 47+ Hours | Verifiable Certificate of Completion | Lifetime Access, Data Visualization Training (15 Courses, 5+ Projects), Cloud Computing Training (18 Courses, 5+ Projects), Maven Interview Questions and Answers | Top And Most Asked, 10 Advanced AngularJS Interview Questions for Experienced, 12 Most Awesome Selenium Interview Questions And Answer, Amazing Guide to Informatica Architecture, Complete Guide to Informatica vs Datastage, Transformations in Informatica with Example, Informatica Scenario Based Interview Questions. Professionals can implement these on their laptops and understand the logic written which will help them to grow technically and also enhance broader vision when a problem statement comes in front of them. If you are exploring a job opportunity around Informatica, look no further than this blog to prepare for your interview. It defines a condition using any statement or transformation function to get either TRUE or FALSE. It tests your hands-on knowledge of working on Informatica tool. Differentiate between Reusable Transformation and Mapplet. The topics you will learn here include the difference between a database and a data warehouse, Informatica Workflow Manager, mapping.. Connect port from exp_2 to target_2 and connect port from exp_3 to target_3. In lookup we can restrict the number of rows while reading the relational table using lookup override but, in joiner we cannot restrict the number of rows while reading. When a property in Lookup transformation is changed to use Dynamic cache, a new port is added to the transformation. 15. Below is the screen shot of the expression transformation. It limits the row sets extracted from a  source. Repeat steps 3 and 4 for other source qualifiers you want to reorder. Some of the most important Informatica Scenario Based Interview Questions that are frequently asked in an interview are as follows: Answer: Karishma 3 5 5 1, Step 3: Pass this output to joiner transformation and apply a join on dummy port. Tell me about a time your workload was very heavy. EXP – Expression transformation create an output port Target load order will be useful when the data of one target depends on the data of another target. Aanchal 1 5 SELECT EMPLOYEE_ID, FIRST_NAME, LAST_NAME, DEPARTMENT_ID, SALARY, RANK () OVER (PARTITION BY DEPARTMENT_ID ORDER BY SALARY) SAL_RANK FROM EMPLOYEES). Update as Insert: – Insert each row flagged for update. 19. You can use this kind of query to fetch more than 1 Max salary for each. The basic idea here is to use, either Joiner or Union transformation, to move the data from two sources to a single target. informatica scenarios based questions In most of the Informatica Interview the panel will come with Scenario based questions which is bit tricky and confusing. Here we’ll tell you the top Informatica interview questions and answers, at both the basic and expert level, to help you prepare for that higher-paying job. If the source has duplicate records, you can also use Dynamic Lookup cache and then router to select only the distinct one. In the day and age of Big Data, success of any company depends on data-driven decision making and business processes. We can also use a Union transformation, if the tables have some common columns and we need to join the data vertically. For a sorted Joiner transformation, designate the source with fewer duplicate key values as the master source. Use the Source Qualifier transformation to perform the join. Create a reusable sequence generator having start value 1 and connect the next value to both rank transformations. Add the next value port of sequence generator to expression transformation. We can share the lookup cache between multiple transformations. No need to select any port as Group by Port.Rank – 1. Column A o_count o_total_records The SQL Override, with concatenated port/column: We are calling the unconnected lookup from one expression transformation. Top Informatica Interview Questions and Answers 1. Connect two groups to corresponding target tables. Priya 2 1 Data can be provided with a global view to the server via a single source store. What are the differences between Source Qualifier and Joiner Transformation? If in the source database there are duplicates, a user can use the property in source qualifier. Informatica Scenarios Practically Solved with explanation. A user must go to the Transformation tab and checkmark the ‘Select Distinct’ option. Situational questions, also sometimes called scenario-based interview questions, are hypothetical interview questions. How to transform source files to required format in output file using Indirect Loading and Java Transformation Informatica Cloud (IICS) Scenario based Interview Questions. Informatica Interview Questions Scenario Based. Can filter rows only from relational sources. 3. Column A O_count Dummy_output The last step is to send the required ports from the Joiner-2 to the target or via an expression transformation to the target table. 4. Smriti Sharan June 16, 2020 June 16, 2020 Comments Off on Salesforce Scenario Based Security Interview Questions. However, you can quite easily end u saying the wrong thing and end up not getting the job as a result! Very good questions with nice explanations for beginners. The Only difference is, from router new_rec will come to one update_strategy and condition will be given dd_insert and one new_pm and version_no will be added before sending to target. Happy reading. Databases (9) Datawarehousing (3) How to (3) IDQ (3) IDQ Interview Questions (2) Informatica (21) Informatica Advance Concepts (13) Informatica Best Practices (2) Informatica … Explain in detail through mapping flow. 18. Generate row numbers using expression transformation by creating a variable port and incrementing it by 1. This cache is updated as and when data is read. 7. 2. This article will help you to crack your next Informatica MDM Job Interview. 2. Without the dimensions, we cannot measure the facts. Any Informatica Transformation created in the Transformation Developer or a non-reusable promoted to reusable transformation from the mapping designer which can be used in multiple mappings is known as. We can share a named cache between transformations in the same or different mappings. TIP #3 – The best way to prepare for scenario-based and situational interview questions is to prepare answers to every job interview question listed on this page. Login to the PowerCenter designer and create a mapping that contains multiple target load order groups. The user can also use Sorter with Sort distinct property to get distinct values. Question4: How can we update a record in target table without using Update strategy? Explain the types of Lookup transformation. With an additional 103 professionally written interview answer examples. 619102 Nupura Pattihal 35000 Nagpur 411014 The target table also has table structure as a source. 2/26/2014 02:34:00 pm in Informatica interview questions, Informatica scenario based questions. 20. Informatica Scenario based Interview Questions and Answers Informatica Cloud (IICS) Scenario based Interview Questions. 13. Group 2 connected to TGT_NOT_NULL ( Expression O_FLAG=’NNULL’). Otherwise, insert it. Equip yourself for these problem solving interview questions. This is one of those scenarios questions that judge prioritization skills. Semi-additive facts are facts that can be summed up for some of the dimensions in the fact table, but not the others. The idea is to add a sequence number to the records and then divide the record number by 2. In this quiz you will answer questions on how to answer … During session configuration, you can select a single database operation for all rows using the Treat Source Rows As setting from the ‘Properties’ tab of the session. Ans-Yes, One can do … Mindmajix offers Advanced IDQ Interview Questions 2019 that helps you in cracking your interview & acquire dream career as an IDQ Analyst. However, if you have already taken an Informatica interview, or have more questions, we encourage you to add them in the comments tab below. When two tables from the same source database with primary key – foreign key transformation relationship is there then the sources can be linked to one source qualifier transformation. Next, set the properties for the target table as shown below. Go through this Edureka video delivered by our Informatica certification training expert which will explain what does it take to land a job in Informatica. About 57% of hiring managers list that as a must. SQ –> EXP –> RTR –> TGT_NULL/TGT_NOT_NULL EXP – Expression transformation create an output port, O_FLAG= IIF ( (ISNULL(cust_id) OR ISNULL(cust_name) OR ISNULL(cust_amount) OR ISNULL(cust _place) OR ISNULL(cust_zip)), ‘NULL’,’NNULL’) ** Assuming you need to redirect in case  any of value is null, O_FLAG= IIF ( (ISNULL(cust_name) AND ISNULL(cust_no) AND ISNULL(cust_amount) AND ISNULL(cust _place) AND ISNULL(cust_zip)), ‘NULL’,’NNULL’) ** Assuming you need to redirect in case all of  value is null, Group 1 connected to TGT_NULL ( Expression O_FLAG=’NULL’) Group 2 connected to TGT_NOT_NULL ( Expression O_FLAG=’NNULL’). Q 1. If you study the Informatica interview questions and answers hard and show great motivation during the actual job interview, you can expect to join the ranks of such administrators. When we add a reusable transformation to a mapping, we actually add an instance of the transformation. The Source Qualifier can join data originating from the same source database. These section of question and answers will assist you to solve your Informatica MDM Job Interview. Then "Tell me about a time" you aced the interview and got the job! Informatica is the world’s most popular data integration tool. Thanks :). Spot the difference in these answers: right ; We had two big orders at the same time. THE CERTIFICATION NAMES ARE THE TRADEMARKS OF THEIR RESPECTIVE OWNERS. The different types of facts are explained in detail below. This has been a guide to List of Informatica Scenario based Interview Questions and answers so that the candidate can crackdown these Interview Questions easily. This examples illustrates a fact constellation in which the fact tables sales and shipping are sharing the dimension tables time, branch, item. In aggregator transformation, group by the key column and add a new port. Keeping this in mind we have designed the most common Informatica Scenario based Interview Questions and Answers to help you get success in your interview. Eg: Facts which have percentages, ratios calculated. Informatica Scenario Based Interview Questions with Answers - Part 1 Informatica Interview Questions on Lookup Transformation Informatica Interview Questions on SQL Transformation If you like this article, then please share it or click on the google +1 button. ... You will be able to crack interviews, answer the scenario based questions in interviews and approaches to solve given scenarios. Solution 1: In the expression transformation, create a variable port and increment it by 1. no remainder, then send them to one target else, send them to the other one. When for some tables this is not possible then a user can create a stored procedure and then join the tables in the database. 30. The Primary key of the fact table is usually the composite key that is made up of the foreign keys of the dimension tables. As from the previous expression transformation, we will have IS_DUP =0 attached to only records, which are unique. The following dialog box will pop up listing all the source qualifier transformations in the mapping and the targets that receive data from each source qualifier. We can use joiner, if we want to join the data sources. Create 3 expression transformations exp_1,exp_2 and exp_3 with 1 port each. Make 3 instances of the target. Update else Insert: – Update the row if it exists. The idea behind this is to add a sequence number to the records and then take the Top 1 rank and Bottom 1 Rank from the records. When the data we need to filter is not a relational source then the user should use Filter transformation. You can also check out our Talend tutorials on YouTube: https://www.youtube.com/playlist?list=PL9ooVrP1hQOGPJgFdMaUeNSktk70k3yJP. Informatica Scenario Based Interview Questions with Answers - Part 1 Informatica Interview Questions on Lookup Transformation Informatica Interview Questions on SQL Transformation If you like this article, then please share it or click on the google +1 button. Here Coding compiler presenting real-time scenario based Informatica MDM interview questions with answers for freshers and experienced. Tags. Question4: How can we update a record in target table without using Update strategy? The best interview questions for all informatica aspirants. The Update Strategy changes the row types. Click on the Mappings in the toolbar and then on Target Load Plan. The topics you will learn here include the difference between a database and a data warehouse, Informatica Workflow Manager, mapping.. Asking these questions helps employers better understand your thought process and assess your problem-solving, self-management and communication skills. 10. For an unsorted Joiner transformation, designate the source with fewer rows as the master source. Follow the below steps to configure the target load order: 1. There are many ways of eliminating duplicates: 1. Group 1 connected to TGT_NULL ( Expression O_FLAG=’NULL’) Drag and drop ports from source qualifier to two rank transformations. We are using a sorter to sort the data. In joiner we can join the tables based on- Normal Join, Master Outer, Detail Outer and Full Outer Join but, in lookup this facility is not available .Lookup behaves like Left Outer Join of database. 9. =TGT_CUST_ID), DD_UPDATE, DD_REJECT)). Introduction to Informatica Scenario Based Interview Questions And Answer. In fact constellation, there are many fact tables sharing the same dimension tables. When a user wants an outer join instead of an inner join, then join information is replaced by metadata specified in SQL query. Below are some questions which will be helpful when you attend an interview on Informatica. During the creation of Profile definition, we can select one of the option (Live data or Staged data) for the data drill down. Explain in detail about SCD TYPE 1 through mapping. Create one new primary key send to target. Explain the different dimensions. The only difference is after router, bring the new_rec to router and give condition dd_insert send to. 5. Here are some of the top Informatica interview questions and answers (scenario-based ) for people who are willing to secure a career in the same field should go through this question and prepare well to clear their job interview panel. I believe for the Scenario-14, as per the solution given one table will contain all the duplicate records and another table will contain only unique records as below as we are using aggregator transformation. Priya 2 5 Snehal 4 5 Like a reusable transformation when we use a mapplet in a mapping, we use an instance of the mapplet and any change made to the mapplet is inherited by all instances of the mapplet. 1. Karishma IDQ Interview Questions and Answers - 300+ real time interview questions with scenarios Informatica Data Quality . Connect the sources with the three input groups of the union transformation. Geeksforgeeks article writing. If they are equal, then we do not take any action on those rows; they are getting rejected. To perform a join in a database, we can use the following options: Create and Use a pre-session stored procedure to join the tables in a database. This is the one of most frequently asked informatica scenario based interview question. Now that you are just one step away to land a job in your dream job, you must prepare well for all the likely interview questions. A target load order group is the collection of source qualifiers, transformations and targets linked in a mapping. Answer: An unconnected Lookup transformation is not connected to a source or target. Informatica Scenario Based Interview Problems with Answers - Part 1. Informatica Scenario based interview questions (Convert columns into rows) This is the one of most frequently asked informatica scenario based interview question. The course aims to enhance your career path in data mining through live projects and interactive tutorials by industry experts. Columns which contains the measure called facts and columns, which are foreign keys to the dimension tables. Here I have listed few scenario based questions: Here, we will see several Informatica interview questions and answers which will help both freshers and experienced who wish to grab great opportunities with INFORMATICA to build their knowledge as well as enable them to clear the interviews. Question2: How to Delete duplicate row using Informatica? Perform joins in a database when possible. When we need to update a huge table with few records and less inserts, we can use this solution to improve the session performance. Question5: What are the differences between Connected … The fact table is surrounded by the dimension tables such as Branch, Location, Time and item. Nupura 5 1, Step 2: Pass the above output to an aggregator and do not specify any group by condition. A. We also have another Informatica Interview questions wherein scenario based questions have been compiled. Emp_Id Emp_Name Salary City Pincode Can filter rows from any type of source system. So, how to write parameter file details for run numbers. Spread the love. What are the advantages of Informatica over other ETL tools? A fact table that contains aggregated facts are often called summary tables. Q 1. Name Email * Message * About me. B. C. I have seen rarely a candidate answer this question correctly. After you pass all the required ports to the Aggregator, select all those ports , those you need to select for de-duplication. Dummy_output=1, The output of this transformation will be : What is Fact Table? informatica scenarios based questions In most of the Informatica Interview the panel will come with Scenario based questions which is bit tricky and confusing. But, I want to load into single target table. Aanchal 1 1 Let’s say, we want to join three tables – Employees, Departments and Locations – using Joiner. We have source data like below in table . Got a question for us? Based on the requirement, we may decide, which one should be used. Use one expression transformation to flag the duplicates. A dimension table consists of the attributes about the facts. 619101 Aanchal Singh 20000 Pune 411051 Practice 15 Scenario Based Interview Questions with professional interview answer examples with advice on how to answer each question. More Questions. This happens when it faces DD_Reject in update strategy transformation. The picture below depicts the group name and the filter conditions. 28. Published by ThinkETL on October 29, 2020 October 29, 2020. ... Update strategy is used whenever the row has to be updated or inserted based on some sequence. There are no measures in this table. You may or might not have noticed, but this is one of the Informatica scenario-based interview questions. The entire mapping should look like this. In the previous blog of Top Informatica Interview Questions You Must Prepare For In 2020, we went through all the important questions which are frequently asked in Informatica Interviews. Configure the sorter in the following way to enable this. Hey Nitin, thanks for the wonderful feedback! NewLookupRow. Snehal 4 1 How do I go about it? 2. The Dynamic Cache can update the cache, as and when it is reading the data. Top 50 Informatica Interview Questions & Answers . List of articles in category Informatica Scenarios Home; Title; Convert single row from source to three rows in target Split the non-key columns to separate tables with key column in both Separating duplicate and non-duplicate rows to separate tables Retrieving first and last record from a … Contact Form. We can join two or more tables with primary key-foreign key relationships by linking the sources to one Source Qualifier transformation. Connect  a router to the aggregator from the previous step. In snowflake, the fact table is surrounded by dimension tables and the dimension tables are also normalized to form the hierarchy. When data is unsorted then a source with less number of rows should be considered as a master source. Use a joiner and use the matching column to join the tables. Add one union transformation and configure it as follows.Group Tab. Solution: In the expression transformation, create a variable port and increment it by 1. What do you mean by Enterprise Data Warehousing? What is meant by Lookup Transformation? Create the next joiner, Joiner-2. These tables are called “Factless Fact tables”. Ans-One can find whether the session is correct or not without connecting the session is with the help of debugging option. We can have several options for handling database operations such as insert, update, delete. Informatica Scenarios I have listed the following informatica scenarios which are frequently asked in the informatica interviews. Design the mapping just like an ‘INSERT’ only mapping, without Lookup, Update Strategy Transformation. Asking these questions helps employers better understand your thought process and assess your problem-solving, self-management and communication skills. ... How to Delete duplicate row using Informatica? NULL NULL 15000 Mumbai 451021. 24. Here Coding compiler presenting real-time scenario based Informatica MDM interview questions with answers for freshers and experienced. Salesforce Scenario Based Security Interview Questions. 11. In such a scenario, data integration is critical to the success formula of any business and mastery of an end-to-end agile data integration platform such as Informatica Powercenter 9.X is sure to put you on the fast-track to career growth. Informatica is a very important tool used in data warehousing, which helps in managing large amounts of data and reporting the analysis of data. 5. Use a filter transformation, only to pass IS_DUP = 0. Eg: Assume that we have a gender dimension and marital status dimension. Join Edureka Meetup community for 100+ Free Webinars each month. If your data is not sorted, then, you may first use a sorter to sort the data and then apply this logic: Bring the source into the Mapping designer. Take the Output from Joiner-1 and ports from Locations Table and bring them to Joiner-2. We will compare the historical data based on key column CUSTOMER_ID. Let’s assume the data is not sorted. 2. What are the types of Schemas we have in data warehouse and what are the difference between them? Instead of that create a junk dimension which has all the combinations of gender and marital status (cross join gender and marital status table and create a junk table). In this Informatica interview questions list, you will come to know the top questions asked in the Informatica job interview. There is a very high possibility that you might get these types of questions during your job interview. If a source has duplicate records then the user can look in Dynamic lookup cache and then the router selects only one distinct record. Spread the love. Published by ThinkETL on October 29, 2020 October 29, 2020. Check the sample and general questions about basics of Data Quality, Profiling and Data Quality Managment . We cannot join more than two sources using a single joiner. How to join three sources using joiner? Also, a user can use SQL override for the same purpose. Answer: How to generate sequence numbers using expression transformation? The user must perform joins whenever possible. Explain though mapping flow. Joiner-1 will join, Employees and Departments and Joiner-2 will join, the output from the Joiner-1 and Locations table. The following dialog box will pop up listing all the source qualifier transformations in the mapping and the targets that receive data from each source qualifier. We can also create a lookup definition from a source qualifier. Additive facts are facts that can be summed up through all of the dimensions in the fact table. How can I do this? Download PDF . 1. We can use the SQL override and concatenate the multiple columns, those we need to return. Informatica MDM Interview Questions If the source is DBMS, you can use the property in Source Qualifier to select the distinct records. It can assign the row types based on the expression created to evaluate the rows. Explain through mapping flows. Karishma 3 5 Their answer is mostly a crammed (by reading on various website) without understanding core concept of informatica transformations. Column A In the expression transformation, the ports are: V_COUNT=V_COUNT+1. When you are interviewing for an Information Technology (IT) job, in addition to the standard interview questions you will be asked during a job interview, you will be asked more focused and specific technical questions about your education, … Commonly, scenario-based interview questions present a situation and ask the person being interviewed to speak about what they need to do to solve the problem. Scenario-based interview questions are questions that seek to test your experience and reactions to particular situations. Hadoop, Data Science, Statistics & others. You can use, Expression and Filter transformation, to identify and remove duplicate if your data is sorted. The scenario-based interview questions below measure your time management. We will use the variable ports to identify the duplicate entries, based on Employee_ID. Add the ports to the target. 4. Call it count_rec to count  the key column. IICS / Interview Questions. We have source data like below in … Also, please subscribe to our blog to stay posted on the upcoming Informatica posts. 6. Using source qualifier the following tasks can be fulfilled: Drag the source and connect to an expression transformation. The aggregator will return the last row. I am posting Informatica complex scenarios questions in this post and I will post Informatica scenarios answers in my next post. The mapping can be as: SQ –> EXP –> RTR –> TGT_NULL/TGT_NOT_NULL Join these two data sources using Location_ID. If my understanding is correct can you please provide the correct answer. We also have another Informatica Interview questions wherein scenario based questions have been compiled. Priya 1. 26. There are three different data models that exist. In the fact table we need to maintain two keys referring to these dimensions. Explain through mapping flow. ... What is the scenario which compels informatica server to reject files? For sorted joiner transformation, a source with less duplicate key values should be considered as a master source. E.g: A fact table which has only product key and date key is a factless fact. Question 5: Name the types of groups present in router transformation. Wondering what Informatica questions you might be asked in an interview? Explain with examples. Top 48 informatica scenario based interview questions. Example: time key, item key, branch key, location key. Or you can also use the SQL Override to perform the same. List of articles in category Informatica Scenarios Home; Title; Convert single row from source to three rows in target Split the non-key columns to separate tables with key column in both Separating duplicate and non-duplicate rows to separate tables Retrieving first and last record from a … This is applicable for any n= 2, 3,4,5,6… For our example, n = 5. Let us discuss in detail in what scenarios we have to introduce a dummy field in transformations and how it helps. When sorted ports are specified then the integration service uses order by clause to the default query. For that, take a sequence generator and connect the next column to expression. Nupura 5 5, Answer: Spread the love. We need to define these options in the Transformations view on mapping tab of the session properties. What is Dimensional Table? OpenCV Python – Read and Display Image In Computer Vision applications, images are an integral part of the development process. 95 Advanced Informatica MDM Interview Questions For Experienced. We will have two tables, one which will contain NULL values and other which would not contain NULL values. Spread the love. In the real world, it is possible to have a fact table that contains no measures or facts. So in this example, the dimension tables such as location, item are normalized further into smaller dimensions forming a hierarchy. Situational interview questions focus on how you’ll handle real-life scenarios you may encounter in the workplace, and how you’ve handled similar situations in previous roles. A fact table is the one which consists of the measurements, metrics or facts of business process. After execution of the above mapping, below is the target, that is populated. Scenario-Based Questions related to the tool. In the real world, it is possible to have a fact table that contains no measures or facts. 5. Create a dummy output port for same expression transformation and assign 1 to that port. 5. Unknown. The final output of this step will have dummy port with value as 1 and O_total_records will have a total number of records in the source. Send the output to the target or via a expression transformation to the target.The entire mapping should look like this. 2. O_FLAG= IIF ( (ISNULL(cust_id) OR ISNULL(cust_name) OR ISNULL(cust_amount) OR ISNULL(cust _place) OR ISNULL(cust_zip)), ‘NULL’,’NNULL’), O_FLAG= IIF ( (ISNULL(cust_name) AND ISNULL(cust_no) AND ISNULL(cust_amount) AND ISNULL(cust _place) AND ISNULL(cust_zip)), ‘NULL’,’NNULL’), Group 1 connected to TGT_NULL ( Expression O_FLAG=’NULL’), Group 2 connected to TGT_NOT_NULL ( Expression O_FLAG=’NNULL’). These informatica scenario interview questions helps you a lot in gaining confidence in interviews. Statcounter. B. C. Output required is. The Integration Service performs differently based on the type of lookup cache that is configured. How to generate sequence / incremental numbers in Informatica? If completely divisible, i.e. If a user wishes to find duplicates in the entire column then all ports should be selected as a group by key. Let us discuss in detail in what scenarios we have to introduce a … Connect a filter transformation to expression and write the condition in property as given in the picture below. How do I do this? Explain in detailed mapping flow. The unconnected Lookup transformation returns one column to the calling transformation. 4. 17. How can you increase the performance in joiner transformation? Informatica Scenario Based Interview Problems with Answers - Part 2 Q 8. Informatica based integration and data warehouse concepts. Joiner transformation condition will be as follows: Based on the types of the Caches configured, we can have two types of caches, Static and Dynamic. Snehal How to generate sequence / incremental numbers in Informatica? 5. Whether it be simple queries or Informatica scenario-based interview questions - don’t neglect them and try to learn everything possible about Informatica. Informatica Interview Questions. O_count=Variable_count This article will help you to crack your next Informatica MDM Job Interview. Set rank properties as follows. 21. Please mention it in the comments section and we will get back to you. Source qualifier transformation is used to represent rows that Integration service reads in a session. Bring three sources into the mapping designer. on. Old_rec also will come to update_strategy condition will give dd_insert then will send to target. Connect col3 from source qualifier to port in exp_3. "PMP®","PMI®", "PMI-ACP®" and "PMBOK®" are registered marks of the Project Management Institute, Inc. MongoDB®, Mongo and the leaf logo are the registered trademarks of MongoDB, Inc. 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A Mapplet is a reusable object created in the Mapplet Designer which contains a set of transformations and lets us reuse the transformation logic in multiple mappings. Nupura, Step1: Assign row numbers to each record. How do you load first and last records into target table? Eg: A transactional code in a fact table. 1. Informatica PowerCenter 9.X Dev and Admi... Informatica Interview Questions and Answers | Edureka. The best interview questions for all informatica aspirants. I delegated one to the assistant lead. 1. In router create two groups and give condition like this: For new records we have to generate new customer_id. Here are some tips to help you prepare to make a great first impression at your next job interview. I am posting Informatica complex scenarios questions in this post and I will post Informatica scenarios answers in my next post. Click the Up and Down buttons to move the source qualifier within the load order. So, the departments table should be loaded first and then the employees table. If we have a requirement to join the mid-stream or the sources are heterogeneous, then we will have to use the Joiner transformation to join the data. Comments. EMP_ID: EMP_NAME: SALARY: 101: Michael: … Consider below data as a source We can share an unnamed cache between transformations in the same mapping. Important Tips to remember while preparing for an interview: The Interview questions of any ETL tool like Informatica PowerCenter/ IBM Datastage mainly consist of 3 type of questions: Theoretical Questions related to the tool. Consequently, during your interview, you may be asked one or more situational questions, which will help your interviewer predict your future performance at work. 3. mkashu: Informatica scenario based interview questions Review : Kashif | Kashif Update: June 07, 2014 | Rating: 4.5 Related Posts to "Informatica scenario based interview questions… Example: Divide the data in two half & load in two separate table. Informatica Scenario based interview questions (Convert columns into rows) by. 16. Dimensions store the textual descriptions of the business. The Lookup Transformation may not perform better as the lookup table size increases and it also degrades the performance. The property sorted input should be checked in joiner transformation. So you have finally found your dream job in Informatica but are wondering how to crack the Informatica interview and what could be the probable Informatica Scenario Based Interview Questions. Top 50 Informatica Interview Questions & Answers . ALL RIGHTS RESERVED. v. When you change the property of the Lookup transformation to use the Dynamic Cache, a new port is added to the transformation. Create one union transformation add the matching ports form the two sources, to two different input groups and send the output group to the target. Union does not even guarantee that the output is repeatable. 3. How many ways are there to do it? Informatica scenario based questions and informatica interview questions. It enhances performance by minimizing the number of rows used in mapping. 8. Then send the two group to different targets. Variable_count= Variable_count+1 A Fact table typically contains two types of columns. We can apply the same logic for any n. The idea behind this is to add a sequence number to the records and divide the sequence number by n (for this case, it is 5). We can use Normalizer transformation for this. Q17.Can one use mapping parameter or variables created in one mapping into any other reusable transformation? Any Informatica Transformation created in the Transformation Developer or a non-reusable promoted to reusable transformation from the mapping designer which can be used in multiple mappings is known as Reusable Transformation. The follow informarica scenarios will be useful for attending interview also to practice for handling different scenarios in day to day office work. Based on the configurations done at lookup transformation/Session Property level, we can have following types of Lookup Caches. Looking for Informatica Data Quality Interview Questions with Answers? 250+ Informatica Interview Questions and Answers, Question1: What can we do to improve the performance of Informatica Aggregator Transformation? Informatica (IICS) Scenario based Interview Questions-2. Dummy_output (port from aggregator transformation) = Dummy_output (port from expression transformation), The output of joiner transformation will be Chapter-2: Introducing a dummy field. We have a source table containing 3 columns: Col1, Col2 and Col3. A new output port should be created as O_total_records in the aggregator and assign O_count port to it. A transformation in the pipeline calls the Lookup transformation with a: LKP expression. Below are some questions which will be helpful when you attend an interview on Informatica. Eg: The date dimension table connected to the sales facts is identical to the date dimension connected to the inventory facts. You can set the target load order or plan in the mapping designer. There is only 1 row in the table as follows: There is target table contains only 1 column Col. Design a mapping so that the target table contains 3 rows as follows: We will have to use the Union Transformation here. Answer: Then assign the variable port to an output port. Eg: Daily balances fact can be summed up through the customers dimension but not through the time dimension. Only then the user can connect both expression and aggregator transformation to joiner transformation. Question3: What are the different lookup cache? The Key for sorting would be Employee_ID. A sales fact is a good example for additive fact. Solution 1: In the expression transformation, create a variable port and increment it by 1. Like IIF (IISNULL (CUST_DIM_KEY), DD_INSERT, IIF (SRC_CUST_ID! Here I have listed few scenario based questions: Informatica based integration and data warehouse concepts. Here we’ll tell you the top Informatica interview questions and answers, at both the basic and expert level, to help you prepare for that higher-paying job. Explain in detail through mapping flow. Your response to Informatica scenario-based interview questions will show your technical skills as well as your soft skills, such as problem-solving and critical thinking. 2. Login to the PowerCenter designer and create a mapping that contains multiple target load order groups. O_FLAG= IIF ( (ISNULL(emp_id) OR ISNULL(emp_name) OR ISNULL(salary) OR ISNULL(City) OR ISNULL(Pincode)), ‘NULL’,’NNULL’) O_total_records – O_count <=2, The final output of filter transformation will be : Instead of providing some scenario based Interview questions and solutions to them I would like to take a different approach here. It filters rows from within a mapped data. © 2020 Brain4ce Education Solutions Pvt. Every interview is different and the scope of a job is different too. Informatica Interview Questions (lead level) ... Lookup transformation can be configured as as “Active” transformation which can output multiple rows based on the configuration. If you're looking for Informatica Interview Questions for Experienced or Freshers, you are in right place.There are lot of opportunities from many reputed companies in the world. A connected Lookup transformation receives source data, performs a lookup, and returns data to the pipeline. Drag all the sources in to the mapping designer. Add the next value of a sequence generator to expression transformation. In router make two groups: one named “original” and another as “duplicate”. Aanchal You can use Sorter and use the Sort Distinct Property to get the distinct values. Connect port from exp_1 to target_1. I have created mapping parameter $$Runnumber, and in mapping i have there is logic in expression transformation. Instead of providing some scenario based Interview questions and solutions to them I would like to take a different approach here. How do you load unique records into one target table and duplicate records into  a different target table? If IS_DUP > 0, that means, those are duplicate entries. Target load order is useful when you want to maintain referential integrity when inserting, deleting or updating tables that have the primary key and foreign key constraints. We can design the mapping as mentioned below. In the fact table there are dimension keys such as time_key, item_key, branch_key and location_keys and measures are untis_sold, dollars sold and average sales.Usually, fact table consists of more rows compared to dimensions because it contains all the primary keys of the dimension along with its own measures. For example, the employees table data depends on the departments data because of the primary-key and foreign-key relationship. When the organization data is created at a single point of access it is called as enterprise data warehousing. Create the Joiner -1 to join Employees and Departments using Department_ID. How To Load Top 5 Records based on SAL without Using RANK transformation in Informatica https: ... for more informatica interview questions and realtime scenarios click here ... For Informatica reolated scenario and Interview Questions. The integration service reads the target load order group concurrently and it processes the target load order group sequentially. You can specify a target load order based on the source qualifier transformations in a mapping. Now we can maintain only one key in the fact table. Explain in detail SCD TYPE 2 through mapping. Target load order (or) Target load plan is used to specify the order in which the integration service loads the targets. The Update Strategy can reject the rows. Dimension table is the one that describes business entities of an enterprise, represented as hierarchical, categorical information such as time, departments, locations, products etc. This article will explain what situational interview questions are, their purpose, the best way to answer them using the STAR technique, and five key questions for which you should prepare. You may also look at the following articles to learn more –. Connect lookup to source. You might like this blog too: https://www.edureka.co/blog/informatica-tutorial. Below are the differences between lookup and joiner transformation: Lookup transformation in a mapping is used to look up data in a flat file, relational table, view, or synonym. 22. IDQ Interview Questions and Answers - 300+ real time interview questions with scenarios Informatica Data Quality . Let’s have a look at the Unconnected Lookup. How to transform source files to required format in output file using Indirect Loading and Java Transformation O_count=Variable_count This is the one of most frequently asked informatica scenario based interview question. The following figure shows the two target load order groups in a single mapping. You can go through that Scenario based Informatica Interview Questions blog by clicking on the hyperlink or by clicking on the button at the right hand corner. As the Unconnected lookup is called from another transformation, we cannot return multiple columns using Unconnected Lookup transformation. Informatica Scenario Based Interview Questions with Answers for experienced Informatica Scenario Based Interview Problems with Answers - Part 1. Differentiate between joiner and Lookup Transformation. Informatica Interview Questions (Scenario-Based): 1. Below are the ways in which you can improve the performance of Joiner Transformation. Therefore, it is important you put yourself in the shoes of the hiring manager and think carefully about the type of answer they want to hear. Karishma 3 1 Lets take further deep dive into the Informatica Interview question and understand what are the typical scenario based questions that are asked in the Informatica Interviews. Chapter-1: Adding Sequence numbers to the Source records . This dummy port will always return 1 for each row. Conformed dimensions mean the exact same thing with every possible fact table to which they are joined. Informatica Scenario Based Interview Questions Q11) Define parallel processing? 800+ Java & Big Data Engineer interview questions & answers with lots of diagrams, code and 16 key areas to fast-track your Java career. 1. If user has view access on report folder but in profile he does not have access to dashboard then will user be able to access the dashboard? This is the one of most frequently asked informatica scenario based interview question. NewLookupRow. How do you convert single row from source into three rows into target? Check the sample and general questions about basics of Data Quality, ... Pattern Based parser will provide full flexibility to customize each individual pattern output. The centralized table in the star schema is called the Fact table. This is the entire flow. We can only return one port from the Unconnected Lookup transformation. Ans: Parallel processing helps in further improvement of performance under hardware power. When you change the property of the Lookup transformation to use the Dynamic Cache, a new port is added to the transformation. Duplicate: COL1 COL2 COL3 a b c x y z v f r Original: COL1 COL2 COL3 r f u. There has never been a better time to get started on a career in ETL and data mining using Informatica PowerCenter Designer. It is an active transformation. can you provide such blogs for Talend also ? Q. What are the differences between OLTP and OLAP? Here is an exhaustive list of scenario-based Informatica interview questions that will help you crack your Informatica interview. IIF($$Runnumber=1, then some logic and IIF($$Runnumber=2 then some logic. Connect col1 from Source Qualifier to port in exp_1. SVR Technologies presents, real-time scenario-based Informatica e-Learning MDM interview questions with answers for experienced and fresher’s New 40 Informatica MDM Interview Questions and Answers. Here, we will see several Informatica interview questions and answers which will help both freshers and experienced who wish to grab great opportunities with INFORMATICA to build their knowledge as well as enable them to clear the interviews. We need to look up the Customer_master table, which holds the Customer information, like Name, Phone etc. Choose the properties Insert and Update else Insert. Connect an expression transformation after source qualifier. Finally, the transformation expression will be as follows: You can use, Aggregator and select all the ports as key to get the distinct values. If you wish to deep dive into Informatica with use cases, I will recommend you to go through our website and enrol at the earliest. The aggregator output will be: O_total_records, Dummy_output How do you load only null records into target? Hope this helps. If we do not want to use Normalizer, then there is one alternate way for this. As a scenario, we are taking one source, containing the Customer_id and Order_id columns. 1. Column A o_count o_total_records The entire mapping should look like this. 12. There are no measures in this table. Do subscribe and stay connected with us. A user can use Aggregator and select ports as key to getting distinct values. If it is divisible, then move it to one target and if not then move it to other target. Situational interview questions focus on how you’ll handle real-life scenarios you may encounter in the workplace, and how you’ve handled similar situations in previous roles. These measurable facts are used to know the business value and to forecast the future business.

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