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how to join two tables without using joiner transformation .advantages of joiner over lookup and vice versa.
CTS,
2 7138can Informatica be used as a cleansing tool? If yes, give examples of transformations that can implement a data cleansing routine.
1921Give a way in which u can implement a real time scenario where data in a table is changing and u need to look up data from it.How will u configure the look up transform for this purpose?
1860how do u estimate the depth of the session scheduling queue? Where do u set the number of maximum concurrent sessions that Informatica can run at a given time?
1973how do u estimate the number of partitions that a mapping really requires? Is it dependent on the machine configuration?
2231
how do u set partition points in the mapping?
What is the difference between project backlog and product backlog?
what are the session parameters? How do u set them?
how do u set partition points in the mapping?
Difference between flat files and relational sources?
What are various etl tools in the market?
what are the reports developed in sap bw project and what is the requirement for developing it?
what is a worklet?
if i have a query as flat file how can we load data to target table
What is virtual Data Warehousing?
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?
how would u estimate the size of Aggregator transform data and index cache?
What are the different etl testing categories as per their function?
Explain the key challenges that you face while performing etl testing.
What do you understand by active and passive transformations?
