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What is etl process? How many steps etl contains?
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what is session partitioning?
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.
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What is cube grouping?
what is the meaning of upgradation of Repository?
Which transformation we use to convert 'NA' to 'Not Available'
when should one create lookup transformation ?
if u can't find what you are looking for in lookup table, how do you handle?
what are the types in error loging?
how would u estimate the size of Aggregator transform data and index cache?
What are the etl testing operations includes?
what is dynamic insert?
Teradata 
