Explain what are the various etl tools in the market?
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What is virtual Data Warehousing?
What is a mapping?
Explain about round-robi?
Explain the use lookup tables and Aggregate tables?
What is initial load and what is full load?
What is a lookup table in etl?
give detail on the sales project how many number of dimensions & fact tables are used in projec briefly. how the four fact tables taken in the project.
can Informatica be used as a cleansing tool? If yes, give examples of transformations that can implement a data cleansing routine.
What are three tier systems in etl?
Explain etl mapping sheets?
how do u implement unconn.stored proc. in a mapping?
What are the steps involved in etl process?
Teradata 
