What is data cleaning? How can we do that?
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What is data type of the surrogate key?
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What needs to be done while starting the database?
What is Factless fact table? In which purpose we are using this in our DWH projects?Plz give me the proper answer. Thanks, Ramesh
What are the design methods of data warehousing?
How many types of facts and what are they?
How many clustered indexes can you create for a table in dwh? In case of truncate and delete command what happens to table, which has unique id.
In a star schema, are foreign key constraints between facts and dimensions neccessary?
What is perform recovery?
What is Active Datawarehousing?
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What is IQD file?
Teradata 
