Explain difference between view and materialized view?
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Explain what are the mapping paramaters and maping variables?
Explain what is a staging area? Do we need it? What is the purpose of a staging area?
How to handle time period attribute for time dependent data?? a.)add time period as a part of pk b.)add time period simply and make it nullablec.)add time period simply and make it not null.
What are the stages of datawarehousing?
what is a hot file, why we need in datawarehousing, where we used in general
What is the purpose of cluster analysis in data warehousing?
I know of using applysimple, but there are other ways too?
What is ods (operation data source)?
What is cubes?
What are session timeout and application timeout? Where we have to do this process?
What is the difference between static cache and dynamic cache?
Explain what is the advantages data mining over traditional approaches?