What is surrogate key? Where we use it? Explain with examples.
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What is data merging, data cleansing and sampling?
Explain the difference between keylokup and joiner?
What are the advantages and disadvantages of reporting directly against the database?
What is latest version of power center / power mart?
Explain what are the mapping paramaters and maping variables?
What is subject area?
Explain difference between e-r modeling and dimentional modeling?
What are snapshots? What are materialized views & where do we use them?
What is conformed fact?
What are the steps of implementing data warehousing?
Explain about core dimension, balanced dimension, and dirty dimension?
Explain meta data?