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Categories  >>  Software  >>  Data Warehouse  >>  ETL        Suggest New Category      Question  Asked @ Answers Views     select   what is HISTOGRAM? how to generate statistics?  0  95 what are the facilities provided by OLAP to analytical users?  1  328 what are the facilities provided by data warehouse to analytical users?  0  91 what is SMP AND MPP?  1  411 how do u identify the changed records in operational data?  0  51 without using ETL tool can u prepare a Data warehousing and maintaining?  1  418 how do u automate Extraction process?  1  122 what are the reporting tools and difference between them?  0  57 how do u extract data from different data sources explain with an example?  0  53 what is an ETL or ETT? And what are the different types?  0  34 what are the different forms of normalization?  2  289 can Informatica be used as a cleansing tool? If yes, give examples of transformations that can implement a data cleansing routine.  1  219 Identifying the bottlenecks in various components of Informatica and resolving them.  0  54 how to join two tables without using joiner transformation .advantages of joiner over lookup and vice versa.  1  284 what is session partitioning?  0  42 E-Mail New Answers        Answer Selected Questions     Prev    1    [2]   3   4   5   6   7   8   9   10    Next         Teradata Interview Questions     Business Objects Interview Questions     Cognos Interview Questions     Informatica Interview Questions     Crystal Enterprise Suite Interview Questions     Actuate Interview Questions     Ab Initio Interview Questions     Data Stage Interview Questions     SAS Interview Questions     Micro Strategy Interview Questions     ETL Interview Questions     Data Warehouse General Interview Questions       Un-Answered Questions    Question Views Asked at   Select   what is meant by drill through?(Mascot) 31   what is the difference steps for data modeling? 29   how would u estimate the size of Lookup transform data and index cache? 34   when will use SQL override in a lookup transformation? 51   what is Forward,Reverse and Re_engineering? 33   Identifying the bottlenecks in various components of Informatica and resolving them. 47   what is an ETL or ETT? And what are the different types? 34   how would u estimate the size of Aggregator transform data and index cache? 45   5. How many repositories can we create in Informatica? 6. What is surrogate key? 7. What is difference between Mapplet and reusable transformation? 8. What is aggregate awareness? 9. Explain reference cursor? 10. What are parallel querys and query hints? 11. DWH architecture? 12. What are cursors? 13. Advantages of de normalized data? 14. What is operational data source (ODS)? 15. What is meta data and system catalog? 16. What is factless fact schema? 17. What is confirmed dimension? 18. What is the capacity of power cube? 19. Difference between PowerPlay transformer and power play reports? 20. What is IQD file? 21. What is Cognos script editor? 22. What is difference macros and prompts? 23. What is power play plug in? 24. Which kind of index is preferred in DWH? 25. What is hash partition? 26. What is DTM session? 27. How can you define a transformation? What are different types of transformations in Informatica? 28. What is mapplet? 29. What is query panel? 30. What is a look up function? What is default transformation for the look up function? 31. What is difference between a connected look up and unconnected look up? 32. What is staging area? 33. What is data merging, data cleansing and sampling? 34. What is up date strategy and what are th options for update strategy? 35. OLAP architecture? 36. What is subject area? 37. Why do we use DSS database for OLAP tools? 33   what are Lookup caches options? Including persistent caches. 23   what are the data modeling tools you have used?(polaris) 39   how can i text accracy of ETL migration? i am very new to data warehousing. we are writing ETL scripts using SCRIPELLA tool. how can i test the correctness of data. and we are generating reports using pentaho . is there any easy way to test the pentaho. how can test these ETL scripts written in scriptella? thanks in advance 59   what is the difference between OLTP database and data warehousing database? 30   two sources S1,S2 containing measures M1,M2,M3, 4 dimensions D1,D2,D3,D4, 1 Fact F1 containing measures M1,M2,M3 and surrogate keys K1,K2,K3,K4 (a) write a sql statement to populate Fact table F1 (b) Design a mapping in Informatica for loading of fact table F1. 39   what is session partitioning? 42   what types of repositories we can create in informatica? in real time in which type of repository we will work on? 32   how do use session mapping parameters ?(in which transformation) 36   Is there any body who works on Pervasive Data Integrator (previously Data Junction)? Is there any scope also? 70   what are the session parameters? How do u set them? 48   list the transformation used for the following:Heterogeneous sources,Homogeneous sources,Find the 5 highest paid employees with in a dept,create a summery table,generate surrogate keys 52   E-Mail New Answers        Answer Selected Questions

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