What is ods (operation data source)?
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What are the advantages and disadvantages of reporting directly against the database?
When should one use an MD-database (multi-dimensional database) and not a relational one?
Explain what is real time data-warehousing?
What are the key columns in Fact and dimension tables?
How many types of facts and what are they?
What is recovering sessions?
What is data merging, data cleansing and sampling?
Why should you put your data warehouse on a different system than your oltp system?
Tell me what is full load & incremental or refresh load?
What is a cube in data warehousing concept?
What is Drill by? drill through?
How can we run the graph? What is the procedure for that?