What is surrogate key? Explain with examples.
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what role views play in dimensional modeling?
How can we do ETL process in SQL Server?
How can we load the time dimension?
What is the difference between ods and oltp?
Explain what is what are semi-additive and factless facts and in which scenario will you use such kinds of fact tables?
What is the difference between olap and datawarehosue?
What is is the guidelines to build universe with better performance? R performance tuning issues of universes?
What are the different types of data warehousing?
What is normalization, first normal form, second normal form, third normal form?
What is a ETL/ How does Oracle support the ETL process?
Explain a mapping, session, worklet, workflow, mapplet?
Why do we use DSS database for OLAP tools?