What is etl tool in hadoop?
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what are the facilities provided by OLAP to analytical users?
Explain the key challenges that you face while performing etl testing.
what is the difference steps for data modeling?
What do you understand by active and passive transformations?
what is the difference between date cache and lindex cache?
how would u estimate the size of Lookup transform data and index cache?
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?
what is pmrep command?
What is Relational Integrity?
what is pmrep command?
how do u automate Extraction process?
in sap bw project at what scenario generic extraction is used and why explain and also tell why you used calendar day option explain?
Teradata 
