How to delete data which is not in source table?

1335

Hi, can anyone plz share the project architecture for etl testing(banking domain) plz explain the architecture .

3018

explain the methodology of Data Warehousing?(Polaries)

2288

Can anyone explain me a scenario from banking and finance...more precisely a mapping

2495

Explain etl?

978

SCD2 will work on only dimension tables as well as fact Table?

1396

what are the data modeling tools you have used?(polaris)

1993

what are the concerns of OLTP and DSS systems?

2444

What are the modules in Power Mart?

957

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.

2054

how do u handle performance issues in Informatica . where can u monitor the performance ?

4732

if i have a query as flat file how can we load data to target table

1396

What is etl process. How many steps etl contains explain with example?

955

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?

2714

Explain different types of partitioning?

1035