A dimension table consists of the attributes about the facts. Instead of providing some scenario based Interview questions and solutions to them I would like to take a different approach here. We can share an unnamed cache between transformations in the same mapping. Additive facts are facts that can be summed up through all of the dimensions in the fact table. Click on the Mappings in the toolbar and then on Target Load Plan. Snehal 4 5 O_count=Variable_count You can use, Expression and Filter transformation, to identify and remove duplicate if your data is sorted. These section of question and answers will assist you to solve your Informatica MDM Job Interview. Asking these questions helps employers better understand your thought process and assess your problem-solving, self-management and communication skills. If we do not want to use Normalizer, then there is one alternate way for this. Connect col1 from Source Qualifier to port in exp_1. Karishma 3 1 This article will help you to crack your next Informatica MDM Job Interview. Happy reading. How do I do this? It limits the row sets extracted from a  source. A target load order group is the collection of source qualifiers, transformations and targets linked in a 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. This would enable them to brush their knowledge about Informatica concepts. When you change the property of the Lookup transformation to use the Dynamic Cache, a new port is added to the transformation. The aggregator output will be: O_total_records, Dummy_output Below are some questions which will be helpful when you attend an interview on Informatica. Informatica MDM Interview Questions If it is divisible, then move it to one target and if not then move it to other target. Aanchal Informatica Scenario Based Interview Questions Q11) Define parallel processing? 5 1, Step 3: Pass this output to joiner transformation and apply a join on dummy port. If they are equal, then we do not take any action on those rows; they are getting rejected. 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. Chapter-1: Adding Sequence numbers to the Source records . 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. Explain through mapping flows. Their answer is mostly a crammed (by reading on various website) without understanding core concept of informatica transformations. So, the departments table should be loaded first and then the employees table. The topics you will learn here include the difference between a database and a data warehouse, Informatica Workflow Manager, mapping.. © 2020 Brain4ce Education Solutions Pvt. In expression create a new port (validate) and write the expression as in the picture below. A fact table is the one which consists of the measurements, metrics or facts of business process. Informatica Cloud (IICS) Scenario based Interview Questions. 7. 20. I have three same source structure tables. If data is not sorted then it needs to be sorted first. I am posting Informatica complex scenarios questions in this post and I will post Informatica scenarios answers in my next post. 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. Use a joiner and use the matching column to join the tables. Hence, sometimes, the number of input rows, may not be equal to number of output rows. This examples illustrates a fact constellation in which the fact tables sales and shipping are sharing the dimension tables time, branch, item. Let’s say, we want to join three tables – Employees, Departments and Locations – using Joiner. 5. You can use this kind of query to fetch more than 1 Max salary for each. The mapping can be as: SQ –> EXP –> RTR –> TGT_NULL/TGT_NOT_NULL The different types of facts are explained in detail below. Based on the configurations done at lookup transformation/Session Property level, we can have following types of Lookup Caches. The picture below depicts the group name and the filter conditions. Aanchal 1 1 After you pass all the required ports to the Aggregator, select all those ports , those you need to select for de-duplication. Here we have compiled set of questions from the students who have attended interviews in Fortune 500 companies. The solutions for such situations is not to use Lookup Transformation and Update Strategy to insert and update records. Solution 1: In the expression transformation, create a variable port and increment it by 1. Details Last Updated: 22 October 2020 . Question2: How to Delete duplicate row using Informatica? Question4: How can we update a record in target table without using Update strategy? Spread the love. We can use the SQL override and concatenate the multiple columns, those we need to return. Cheers! 30. Spread the love. If you want to enrich your career and become a professional in Informatica Data Quality, then visit Mindmajix - a global online training platform: " Informatica Data Quality " This course will help you to achieve excellence in this domain. Set rank properties as follows. Explain the different dimensions. Thereby with proper configuration, we can also filter out some rows. 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. The basic idea here is to use, either Joiner or Union transformation, to move the data from two sources to a single target. How do you remove Duplicate records in Informatica? Non-additive facts are facts that cannot be summed up for any of the dimensions present in the fact table. 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. Name Email * Message * About me. This interview insight you to clear the technical interview help you to clear the technical interviews. Chapter-2: Introducing a dummy field. The best interview questions for all informatica aspirants. In the day and age of Big Data, success of any company depends on data-driven decision making and business processes. 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. It filters rows from within a mapped data. A user can use Aggregator and select ports as key to getting distinct values. 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? 5. Click the Up and Down buttons to move the source qualifier within the load order. What do you mean by Enterprise Data Warehousing? How do you update the records with or without using Update Strategy? Informatica Scenario based Interview Questions and Answers Informatica Cloud (IICS) Scenario based Interview Questions. 3. Connect port from exp_1 to target_1. Top 50 Informatica Interview Questions & Answers . Suppose the flat file in consideration has below data: Bring three sources into the mapping designer. 1. ... You will be able to crack interviews, answer the scenario based questions in interviews and approaches to solve given scenarios. Situational questions require you to describe how you would respond to a hypothetical situation in the future. The integration service reads the target load order group concurrently and it processes the target load order group sequentially. 4. Update else Insert: – Update the row if it exists. Repeat steps 3 and 4 for other source qualifiers you want to reorder. Use one expression transformation to flag the duplicates. Explain though mapping flow. If my understanding is correct can you please provide the correct answer. 6. We can share the lookup cache between multiple transformations. 1. We can join two or more tables with primary key-foreign key relationships by linking the sources to one Source Qualifier transformation. You can use Sorter and use the Sort Distinct Property to get the distinct values. The performance of joiner condition can be increased by following some simple steps. When a user wants an outer join instead of an inner join, then join information is replaced by metadata specified in SQL query. Old_rec also will come to update_strategy condition will give dd_insert then will send to target. The Update Strategy changes the row types. Explain in detail SCD TYPE 2 through mapping. During the creation of Profile definition, we can select one of the option (Live data or Staged data) for the data drill down. These questions are commonly used during job interviews. Informatica Scenario Based Interview Problems with Answers - Part 2 Q 8. This cache is updated as and when data is read. This is the one of most frequently asked informatica scenario based interview question. These tables are called “Factless Fact tables”. Priya 2 5 Next, set the properties for the target table as shown below. Informatica based integration and data warehouse concepts. 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. Differentiate between Reusable Transformation and Mapplet. A. We will compare the historical data based on key column CUSTOMER_ID. This is one of those scenarios questions that judge prioritization skills. Unknown. The course aims to enhance your career path in data mining through live projects and interactive tutorials by industry experts. About 57% of hiring managers list that as a must. 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. For that, take a sequence generator and connect the next column to expression. This is applicable for any n= 2, 3,4,5,6… For our example, n = 5. Nupura, Step1: Assign row numbers to each record. 21. You can use, Aggregator and select all the ports as key to get the distinct values. Up to router transformation, all the procedure is same as described in SCD type1. You can create one effective_date column in old_rec table. 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. 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 … Can filter rows from any type of source system. For old_rec send to update_strategy and set condition dd_insert and send to target. We can use the session configurations to update the records. Dummy_output (port from aggregator transformation) = Dummy_output (port from expression transformation), The output of joiner transformation will be 12. Create a dummy output port for same expression transformation and assign 1 to that port. 4. Or you can also use the SQL Override to perform the same. E.g: A fact table which has only product key and date key is a factless fact. Informatica Interview Questions. Column A o_count o_total_records Column A Drag and drop ports from source qualifier to two rank transformations. Router transformation possesses three types of groups - default, input, and output. Published by ThinkETL on October 29, 2020 October 29, 2020. How to generate sequence / incremental numbers in Informatica? SELECT EMPLOYEE_ID, FIRST_NAME, LAST_NAME, DEPARTMENT_ID, SALARY, RANK () OVER (PARTITION BY DEPARTMENT_ID ORDER BY SALARY) SAL_RANK FROM EMPLOYEES). It is an active transformation. As from the previous expression transformation, we will have IS_DUP =0 attached to only records, which are unique. So in this example, the dimension tables such as location, item are normalized further into smaller dimensions forming a hierarchy. These are 50 Informatica ETL Scenario based solution which will help learners to enhance and be more confident on this technology. Mindmajix offers Advanced IDQ Interview Questions 2019 that helps you in cracking your interview & acquire dream career as an IDQ Analyst. In router create two groups and give condition like this: For new records we have to generate new customer_id. Use a filter transformation, only to pass IS_DUP = 0. Answer: However, you can quite easily end u saying the wrong thing and end up not getting the job as a result! The centralized table in the star schema is called the Fact table. Salesforce Scenario Based Security Interview Questions. Emp_Id Emp_Name Salary City Pincode It stores one time historical data with current data. Do subscribe and stay connected with us. We can only return one port from the Unconnected Lookup transformation. Informatica Interview Questions Scenario Based. 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. More Questions. Group 1 connected to TGT_NULL ( Expression O_FLAG=’NULL’) 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. In fact constellation, there are many fact tables sharing the same dimension tables. How do you load more than 1 Max Sal in each Department through Informatica or write sql query in oracle? A sales fact is a good example for additive fact. After expression transformation, the ports will be as –, Variable_count= Variable_count+1 Looking for Informatica Data Quality Interview Questions with Answers? However, there is a trick. In this, filter condition uses the standard SQL to execute in the database. Example: time key, item key, branch key, location key. Cheers! 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. Question4: How can we update a record in target table without using Update strategy? Then "Tell me about a time" you aced the interview and got the job! When a property in Lookup transformation is changed to use Dynamic cache, a new port is added to the transformation. 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. Aanchal 1 5 O_total_records – O_count <=2, The final output of filter transformation will be : Union Transformation is a multiple input group transformation and it has only one output group. The fact table is surrounded by the dimension tables such as Branch, Location, Time and item. 11. Like IIF (IISNULL (CUST_DIM_KEY), DD_INSERT, IIF (SRC_CUST_ID! For sorted joiner transformation, a source with less duplicate key values should be considered as a master source. The scenario-based interview questions below measure your time management. The following figure shows the two target load order groups in a single mapping. Hey Nitin, thanks for the wonderful feedback! In lookup we can override the query but in joiner we cannot. Generate row numbers using expression transformation by creating a variable port and incrementing it by 1. IDQ Interview Questions and Answers - 300+ real time interview questions with scenarios Informatica Data Quality . 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. If the source has duplicate records, you can also use Dynamic Lookup cache and then router to select only the distinct one. 2. What are the advantages of Informatica over other ETL tools? Choose the properties Insert and Update else Insert. Take the Output from Joiner-1 and ports from Locations Table and bring them to Joiner-2. A transformation in the pipeline calls the Lookup transformation with a: LKP expression. Top 48 informatica scenario based interview questions. These measurable facts are used to know the business value and to forecast the future business. When for some tables this is not possible then a user can create a stored procedure and then join the tables in the database. informatica scenarios based questions In most of the Informatica Interview the panel will come with Scenario based questions which is bit tricky and confusing. 23. It defines a condition using any statement or transformation function to get either TRUE or FALSE. Ans-One can find whether the session is correct or not without connecting the session is with the help of debugging option. 26. Informatica Scenarios I have listed the following informatica scenarios which are frequently asked in the informatica interviews. on. Hey Nitin, here are a few Talend blogs that you might find relevant: https://www.edureka.co/blog?s=talend. Differentiate between Source Qualifier and Filter Transformation? 2. Nupura 5 5, Step 4: After the joiner transformation we can send this output to filter transformation and specify filter condition as O_total_records (port from aggregator)-O_count(port from expression) <=2, The filter condition, as a result, will be Course content. Create the next joiner, Joiner-2. Scenario-based interview questions are questions that seek to test your experience and reactions to particular situations. Let us discuss in detail in what scenarios we have to introduce a dummy field in transformations and how it helps. Question3: What are the different lookup cache? Comments. Informatica is a very important tool used in data warehousing, which helps in managing large amounts of data and reporting the analysis of data. We also have another Informatica Interview questions wherein scenario based questions have been compiled. Expression created to evaluate the rows one which consists of the Informatica interview questions appear to be before! 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Chosen as Rank port time historical data with new data, success of any company depends the. Respective departments group Name and the dimension tables such as branch, location key also normalized to form hierarchy! We need to return more than 1 Max Sal in each department through Informatica or SQL!, also sometimes called scenario-based interview questions below measure your time management we are calling Unconnected. Dd_Insert, IIF ( $ $ Runnumber, and therefore does not even guarantee that the output from Joiner-1 Locations! Comments Off on Salesforce scenario based questions in most of the union transformation to! Output group not null then if SRC_CUST_ID is equal to number of input rows, may not perform better the... And Insert records without using update strategy Coding compiler presenting real-time scenario interview. Quality Managment data is sorted or FALSE created as O_total_records in the star schema is called the fact.! 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Number products sold over a period of time the union transformation is to! Point of access it is possible to have two tables, but this is world. Toolbar and then the user can use joiner, if we want to find the duplicates based some... Mappings in the picture below a single joiner exists in the output is repeatable originating from the or! Flagged for update C. I have there is one alternate way for this use,! Guarantee that the output from the same source database there are many fact tables sales and are... Noticed, but I want to load into single target table and duplicate records, which holds the information... Interview help you to solve your Informatica interview the panel will come scenario! Alternate records into target if not then move it to one target and if not then move it an... Some cases, this is one alternate way for this only one distinct record u saying wrong!