how many steps are there in etl process?
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Define slowly changing dimensions (SCD)?
what is an ETL or ETT? And what are the different types?
I have two tables in two different database, so to join these tables which transformation will be better joiner transformation or lookup transformation?
2 Answers Accenture, Saama Tech, TCS,
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Give the benefits of data integration suite?
What is a staging area? What is the purpose of a staging area?
Can we create Hierarchies in generic datasources?
What is a mapping, session, worklet, workflow, mapplet?
how do u estimate the number of partitions that a mapping really requires? Is it dependent on the machine configuration?
how do u decide whether u need to do aggregations at database level or at Informatica level?
how to join two tables without using joiner transformation .advantages of joiner over lookup and vice versa.
What is tracing level and what are the types?
Teradata 
