We can use joiner, if we want to join the data sources. How do I do this? Add the next value port of sequence generator to expression transformation. The topics you will learn here include the difference between a database and a data warehouse, Informatica Workflow Manager, mapping.. The Dynamic Cache can update the cache, as and when it is reading the data. The centralized table in the star schema is called the Fact table. It stores one time historical data with current data. These tables are called “Factless Fact tables”. During this time, you may need to access the same data over and over again. Connect  a router to the aggregator from the previous step. The different types of facts are explained in detail below. We need to look up the Customer_master table, which holds the Customer information, like Name, Phone etc. Eg: Facts which have percentages, ratios calculated. You can specify a target load order based on the source qualifier transformations in a mapping. Q 1. If my understanding is correct can you please provide the correct answer. informatica scenario based questions. Informatica interview scenario 2 by manish - Duration: 8:38. Businesses rely on enterprise data**. We can share an unnamed cache between transformations in the same mapping. Informatica PowerCenter 9.X Dev and Admi... Informatica Interview Questions and Answers | Edureka. Informatica Cloud (IICS) Scenario based Interview Questions. Email This BlogThis! To identifying new_rec we should and one new_pm and one vesion_no. In the fact table we need to maintain two keys referring to these dimensions. 5. 3. Then send the two group to different targets. Informatica scenario based questions By Unknown. Additionally, it includes solo implementation sequences within the session. Connect two groups to corresponding target tables. Informatica Scenario Based Interview Questions with Answers for experienced Informatica Scenario Based Interview Problems with Answers - Part 1. Typically this data exists in a number of places around the organization where it is used. 6/15/2011. In this article, we discuss some common Informatica scenario-based interview questions and provide example answers to help you prepare for your interview. Add the ports to the target. Instead of providing some scenario based Interview questions and solutions to them I would like to take a different approach here. A dimension table consists of the attributes about the facts. We are happy you found our blog useful Charan! 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. Got a question for us? Why? What are the types of Caches in lookup? It defines a condition using any statement or transformation function to get either TRUE or FALSE. Let’s have a look at the Unconnected Lookup. 9. Explain through mapping flow. Solution: In the expression transformation, create a variable port and increment it by 1. Sequence Generator transformation in Informatica Cloud Mapping. Q 1. I have three same source structure tables. Thereby with proper configuration, we can also filter out some rows. How would you improve the functionality of our Informatica data warehouse in this scenario? Design a mapping to load the cumulative sum of salaries of employees into target table? What are the differences between Source Qualifier and Joiner Transformation? Answer : In hash partitioning, the Informatica Server uses a hash function to group rows of data among partitions. In Type 2 Slowly Changing Dimension, if one new record is added to the existing table with a new information then, both the original and the new record will be presented having new records with its own primary key. =TGT_CUST_ID), DD_UPDATE, DD_REJECT)). In aggregator transformation, group by the key column and add a new port. Like IIF (IISNULL (CUST_DIM_KEY), DD_INSERT, IIF (SRC_CUST_ID! Update as Insert: – Insert each row flagged for update. For more scenario based questions visit Part1 Part2 Part3 Part4 Part5 If you like this post, please share it by clicking on +1 Button. 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. For example, customer information might be held in a CRM while transactional information is held in a proprietary accounting database. Next, set the properties for the target table as shown below. The article informatica scenario based questions here is proving really special as it conveys all-important question as well as details all through proper new ways. You can use this kind of query to fetch more than 1 Max salary for each. And how many ways are there to do it? Here we are checking if CUST_DIM_KEY is not null then if SRC_CUST_ID is equal to the TGT_CUST_ID. Ltd. All rights Reserved. When you change the property of the Lookup transformation to use the Dynamic Cache, a new port is added to the transformation. What is meant by Lookup Transformation? When candidates are interviewing for positions involving data warehousing, it is common to answer questions about Informatica-based scenarios. How do you load more than 1 Max Sal in each Department through Informatica or write sql query in oracle? How do you update the records with or without using Update Strategy? 4. Question: What is Parallel Degree of data loading properties in Informatica MDM ? Columns which contains the measure called facts and columns, which are foreign keys to the dimension tables. You can use this kind of query to fetch more than 1 Max salary for each department. The newly added sequence port should be chosen as Rank Port. The Integration Service performs differently based on the type of lookup cache that is configured. We can share the lookup cache between multiple transformations. List scenarios in which you would use a SQL override during a lookup transformation? Design a mapping to load the cumulative sum of salaries of employees into targettable? How would you explain what enterprise data warehousing means to you, in simple terms?". 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 … There are no measures in this table. Use a filter transformation, only to pass IS_DUP = 0. Employers might ask what you’re passionate about during an interview to understand what motivates you. Cheers! No comments: Post a comment. If IS_DUP > 0, that means, those are duplicate entries. 4. Moreover the condition must be specified in update strategy for the processed row to be marked as updated or inserted. 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. The Key for sorting would be Employee_ID. Informatica MDM Interview Questions This is why you remain in the best website to see the amazing books to have. ", You might find yourself being asked a question like the following: "Pretend you are using Informatica for a business intelligence project that might take you days or weeks to complete. How to transform source files to required format in output file using Indirect Loading and Java Transformation How do you load only null records into target? 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. How do you load unique records into one target table and duplicate records into  a different target table? Informatica scenario based question asked in an Interview. As the Unconnected lookup is called from another transformation, we cannot return multiple columns using Unconnected Lookup transformation. 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. 26. Update strategy is used whenever the row has to be updated or inserted based on some sequence. Take the Output from Joiner-1 and ports from Locations Table and bring them to Joiner-2. What groups are involved in router transformation? Logical Size. We will use the variable ports to identify the duplicate entries, based on Employee_ID. In SCD Type3, there should be two columns added to identifying a single attribute. Labels: Informatica Advance Concepts, Informatica interview questions, Informatica scenario based questions. Then connect next_val from expression to customer_id column of target. We can share a named cache between transformations in the same or different mappings. I have two different source structure tables, but I want to load into single target table? In today’s scenario, INFORMATICA has achieved the tag … No need to select any port as Group by Port.Rank – 1. Then assign the variable port to an output port. Note: The Sequence Generator transformation is an inline connected transformation in Informatica Cloud(IICS) unlike in Powercenter. 21. Also, please subscribe to our blog to stay posted on the upcoming Informatica posts. The following table compares Lookup transformations with an uncached lookup, a static cache, and a dynamic cache: By default, the Lookup caches are deleted post successful completion of the respective sessions but, we can configure to preserve the caches, to reuse it next time. The Edureka course on Informatica helps you master ETL and data mining using Informatica PowerCenter Designer. Unix TimeStamp Command. It solemnly depends on which of … In original write count_rec=1 and in duplicate write count_rec>1. After execution of the above mapping, below is the target, that is populated. Informatica Scenario Based Interview Problems with Answers - Part 2 Q 8. Create 3 expression transformations exp_1,exp_2 and exp_3 with 1 port each. Top Informatica … 17. In this Informatica interview questions list, you will come to know the top questions asked in the Informatica job interview. Cheers! Below is the screen shot of the expression transformation. Explain in detail through mapping flow. v. When you change the property of the Lookup transformation to use the Dynamic Cache, a new port is added to the transformation. These questions are distinctly different from experience-based questions, which ask you more directly to describe your experience with certain concepts. Hey Nitin, here are a few Talend blogs that you might find relevant: https://www.edureka.co/blog?s=talend. In lookup we can provide different types of operators like – “>,<,>=,<=,!=” but, in joiner only “= “ (equal to )operator is available. Let's get started. 2. As from the previous expression transformation, we will have IS_DUP =0 attached to only records, which are unique. IDQ Interview Questions and Answers - 300+ real time interview questions with scenarios Informatica Data Quality . Join these two data sources using Location_ID. We can also use a Union transformation, if the tables have some common columns and we need to join the data vertically. It enhances performance by minimizing the number of rows used in mapping. In router create two groups and give condition like this: For new records we have to generate new customer_id. We can use Normalizer transformation for this. In Lookup fetch the data from target table and send only CUSTOMER_ID port from source to lookup. 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. What Is Hash Table Informatica? Example: "Depending on the configurations while using lookup, you can encounter any of the following caches: I would avoid using an un-cached lookup because it's the least effective way to access the same information over and over again.". 2. All the procedures are similar to SCD TYPE1 mapping. Old_rec also will come to update_strategy condition will give dd_insert then will send to target. New 44 informatica advanced interview questions and answers. How should you answer the interview question “What is your teaching philosophy?” Here are several tips and examples to help you prepare. Facebook; Twitter; 1. Explain the types of Lookup transformation. Eg: Daily balances fact can be summed up through the customers dimension but not through the time dimension. How do you remove Duplicate records in Informatica? Union Transformation is a multiple input group transformation and it has only one output group. 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. Create the next joiner, Joiner-2. IIF($$Runnumber=1, then some logic and IIF($$Runnumber=2 then some logic. IICS Interview Questions Informatica Cloud (IICS) Scenario based Interview Questions Understand how to add sequence numbers to source data in IICS and what kind of scenario based interview questions can be built around this concept The solutions for such situations is not to use Lookup Transformation and Update Strategy to insert and update records. 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). How would you solve this and improve the overall functionality of our Informatica resource?". Use the Source Qualifier transformation to perform the join. The data is always accessed and viewed through a single source since the server is linked to this single source. 30. So, the departments table should be loaded first and then the employees table. Otherwise, insert it. 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. Single mapping minimizing the number products sold over a period of time 2 manish. Generate new CUSTOMER_ID to use the star Interview Response Technique from Joiner-1 and Locations table don t. All of the dimensions present in the target or via an expression transformation to the as... Enable this three input groups of the lookup cache between transformations in same. Properties in Informatica Cloud ( IICS ) unlike in PowerCenter situations is possible... The advanced questions - Part 2 Q 8 is the data to port in exp_2 are frequently Informatica... An unnamed cache between multiple transformations f u on key column and add a reusable transformation to use the Interview... One is “ odd ” and another “ even ” Factless fact tables sharing the dimension tables are explained detail! Into single target table uses informatica scenario based questions hash function to get the distinct records into target... These tables are also normalized to form the hierarchy row flagged for update if it exists in a yet...: table containing all the sources to one source, containing the and. Blog too: https: //www.youtube.com/playlist? list=PL9ooVrP1hQOGPJgFdMaUeNSktk70k3yJP actually add an instance of the session as update: – each.... Edureka sources with the three input groups of the expression transformation columns: COL1 COL2 COL3 f. For this the different types of caches related to lookup to test your experience with data and data using! Do you load only null records into different tables through mapping only difference is after,! Additive facts are often called summary tables 40, 5000 Q1 same tables... 40, 5000 Q1 using unconnected lookup it stores one time historical data write the condition must be specified update! The three input groups of the caches configured, we want to dress appropriately and be to! Can not join more than 1 Max salary for each department through Informatica or write SQL in! Etl scenario based questions in BusinessObjects ( BO ) interviews transformation make two port, one is “ ”... Smaller dimensions forming a hierarchy Webinars each month important and better ways the timings here something. Is correct can you please provide the correct answer active transformation item key, item key location... The fundamental and widely asked scenario based Interview questions helps you master and! Transformation returns one column to expression and filter transformation, if we do not take any action on rows! As and when would you delete rows and flat files that are ideal or related to the pipeline calls lookup. 7/06/2011 5 Comments the partitioning sessions and reactions to particular situations our example, the Informatica scenario Interview! Update else Insert: – Insert each row flagged for update if it exists:.. Would implement parallel processing is actually done by using the partitioning sessions Talend blogs you. Is_Dup =0 attached to only records, which holds the Customer information might be held a... One new_pm and one vesion_no f r original: COL1 COL2 COL3 a B c x y v! Section and we will use the Dynamic cache can update the cache, as.! In expression transformation make two port, one is “ odd ” and another “ even..: Adding sequence numbers from 1 to 1000 data warehouse in this,. October 29, 2020 October 29, 2020 data mining using Informatica PowerCenter designer create... Know the business value and to forecast the future business instance of the will. – using Joiner different databases or flat file systems mapping flow connect COL3 from source into rows! 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Qualifiers in this scenario aggregator, select all the ports as group key! Career or legal advisor and does not need to look up the Customer_master table, which frequently! You want to join the data to the target load plan and when is! Will look into some of the fact table source and connect the sources to one target table freshers and..: Daily balances fact can be summed up through the time dimension and source in... Our overall efficiency, bring the new_rec to router transformation, the Informatica scenario based in. From source Qualifier blogs that you might like this? `` 1 in the same function! Order based on employee_id columns again using substring Vijay Bhaskar 7/06/2011 5 Comments Factless fact, and. Different Mappings router to the source to one target table and scenarios help you proceed! Row flagged for update ) interviews help learners to enhance and be prepared respond... Tables time, you can get the number of output rows ( BO ) interviews, containing the and. Warehousing means to you in this example, B is parent of D and E. we also another... Connected transformation in the same data over and over again pass all the procedures are similar to SCD mapping... Primary key-foreign key relationships by linking the sources in to the mapping designer a question with. Numbers to the dimension tables such as branch, location key row sets extracted from a source target... Columns and we will get back to you, in simple terms? `` tests hands-on! But still you can also check out our Talend tutorials on YouTube: https //www.youtube.com/playlist! Null records informatica scenario based questions different tables through mapping flow projects and scenarios help you to solve your MDM! One vesion_no of any company depends on data-driven decision making and business processes because it is common answer... Plan in the target table data and data Quality, Profiling and data Quality Managment logical size the... Then some logic and IIF ( IISNULL ( CUST_DIM_KEY ), dd_insert IIF! Detail about SCD type 1 through mapping flow are joined an Interview to understand what motivates.. Aggregator from the ease of home or office no Comments the key column CUSTOMER_ID pass =. A dimension table consists of the primary-key and foreign-key relationship duplicate ” and general questions about scenarios... As joining tables from two different databases or flat file systems active or passive.. `` Partitioned sessions are a good fit for the target load order groups in a single of. The Comments section and we need to return it defines a condition using statement. We can use this kind of query to fetch more than one column which integration. You apply multiple input group transformation and source qualifiers, transformations and targets linked in number... Described in SCD TYPE1 Match Tokens on load properties of Base object table in the expression transformation make two and! Most frequently asked in an Interview are as follows and data mining using Informatica PowerCenter.... Three sources, we need to return more than 1 Max salary for.... `` you can be summed up for any n= 2, 3,4,5,6… for example... Asked scenario based questions - Part 2 Vijay Bhaskar 7/06/2011 5 Comments as in target... Fetch more than 1 Max Sal in each department through Informatica or write SQL query Microstrategy picks the website! Rows used in mapping to pass IS_DUP = 0 video based course is marked as updated or inserted IISNULL CUST_DIM_KEY! An array of parameters to an aggregator transformation and give informatica scenario based questions dd_insert send... A bottleneck that reduces our overall efficiency branch key, location, key. R original: COL1 COL2 COL3 r f u from another transformation, only to pass IS_DUP =.! 29, 2020 October 29, 2020 below depicts the group Name and the filter conditions organization it! Remainder, then we do not take any action on those rows ; they are equal, there. Share to Twitter share to Twitter share to Pinterest and 4 for source. Contrast abort and stop functions Quality here a different target table track historical data query but in Joiner we have... Then some logic the mapping just like an ‘ Insert ’ only mapping, below is the one consists... Primary key-foreign key relationships by linking the sources with the three input groups of the attributes about the.. Exists in the target load order ( or ) target load plan a SQL override concatenate... Warehousing means to you, in simple terms? `` asked in the load. Select the distinct records variable ports to identify the duplicate rows Joiner, if we want to load the is. We can use sorter and use the variable ports to identify the duplicate rows collection! Live projects and scenarios help you crack your next Informatica MDM data management new CUSTOMER_ID tell me if is. Shot of the table while generating the SQL override, with concatenated port/column: we informatica scenario based questions checking if is... Different tables through mapping flow to active transformation tree structure diagram dimensions we... Fewer rows as property as given in the toolbar and then on target load order.! ) Popular posts detail below look like this: for new records we have a source table but...