How can you use an Oracle sequences in Informatica ? You
have an Informatica sequence generator transformation also.
which one is better to use?
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Explain do we need an etl tool?
when should one create lookup transformation ?
what is the difference between shortcut of an object and copy of an object? compare them?
Explain about enterprise scalability and roi of data integration suite?
what is the difference between date cache and lindex cache?
Explain do we need an etl tool? When do we go for the tools in the market?
Explain different types of partitioning?
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?
Give 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?
What is tracing level? How many types of transformations supported by sorted input?
how do u identify the changed records in operational data?
what happens if the info.server doesn't find the session parameter in the parameter file?
Teradata 
