Briefly state different between data ware house & data mart?
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What is a star schema? Why does one design this way?
What is the difference between power center and power mart?
5.Explain ODS ?
Do you view contain data?
What is metadata in context of a datawarehouse and how it is important?
What is drilling across?
After the complete generation of a report who will test the report and who will analyze it?
What are non-additive facts in detail?
What is data merging, data cleansing and sampling?
suppose data are coming from different locations and those data will not change . is there any need to use surrogate key ?
What are the different types of join operations?
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.