what are the data modeling tools you have used?(polaris)
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Which type or t/s is used to convert rows into column & column into rows
what is granularity in Data ware House?
what is the difference between cardinality and Nullability?
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.
When you have 2 servers in two different time zone and if you need to extract data from 1 server and load it in another server, how do you go about it? Best method to be used.
when will use SQL override in a lookup transformation?
Which transformation we use to convert 'NA' to 'Not Available'
What is a mapping, session, worklet, workflow, mapplet?
can u anyone plz share some etl testing interview question . and share the sql queries and unix . plz help me to clear in the etl testing interview by sharing ur knowledge
how many steps are there in etl process?
Explain and compare etl & manual development?
What do you understand by active and passive transformations?