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)
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how many maximum session supports to multiload in teradata ??
what is the difference between OLTP database and data warehousing database?
Assume u have a 24CPU machine with 24GB RAM, suggest how u would like to configure Informatica ,like number of concurrent sessions, RAM requirements etc,max partitions that u would permit per mapping.
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?
without using ETL tool can u prepare a Data warehousing and maintaining?
Explain about round-robi?
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.
what is different between sequential batch and concurrent batch and which is recommended and why?
what is dynamic insert?
what are the types in error loging?
explain the methodology of Data Warehousing?(Polaries)
how 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?
Teradata 
