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What is Data Vault???
In informatica, I have 10 records in my source system. I need to load 2 records to target for each run. How do I do this?
what are the types in error loging?
What are the three tiers in etl?
What do you understand by the term ‘transformation’?
Do we need an ETL tool? When do we go for the tools in the market?
How to fine tune mappings?
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?
What are the various tools used in etl?
how do u really know that paging to disk is happening while u are using a lookup transform?
Hi, I completed MCA in 2006.After studied Informatica,SQL server and basics of reporting tool in one of the training center in chennai.I got subject knowledge only.But I didn't go any job because I scared to face real time.Anyone please advice how can I enter again into this and anyone provide real time exposure with project.
how to do aggregation (year wise quantity ) using only source qualifier, the source is sql server date as datetime data type and target as flat file with year (string datatype)
Can we create Hierarchies in generic datasources?
what are the data sources extracted from logistics cockpit in sap bw project and what is the requirement for it ?
what is session partitioning?
