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Answer Posted / ranj
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what is granularity in Data ware House?
When do we analyze the tables?
What are the differences between sql override and update override?
Can u access a repository created in previous version of Informatica?
explain the methodology of Data Warehousing?(Polaries)
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?
Do we need an ETL tool? When do we go for the tools in the market?
How to fine tune mappings?
What is initial load and what is full load?
Identifying the bottlenecks in various components of Informatica and resolving them.
Explain etl mapping sheets?
What is tracing level? How many types of transformations supported by sorted input?
what are Lookup caches options? Including persistent caches.
Can anyone explain me a scenario from banking and finance...more precisely a mapping
How many steps etl contains?
