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?
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what is the meaning of upgradation of Repository?
in sap bw project at what scenario generic extraction is used and why explain and also tell why you used calendar day option explain?
what are the data modeling tools you have used?(polaris)
What is a mapping?
Explain what is etl process? How many steps etl contains explain with example?
How many steps etl contains explain with example?
Is hadoop a etl tool?
How to Check the source record count from traget table.
Difference between flat files and relational sources?
1.Identify and discuss the problems which are occurred during data quality verification for the single-source and multi-source problems. 2.Testing has very important role in DWH. In ETL testing phase, how can we perform the integration testing and regression testing? 3.What are the perquisites of system testing and regression testing in ETL phase?
When do we analyze the tables? How do we do it?
Explain me ETL project architecture in Detail?
Teradata 
