What is fact less fact table? Where you have used it in your project?
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in general which algorithms for used?
When should you use a STAR and when a SNOW-FLAKE schema?
explain about dirty dimension?
What is Sequence clustering algorithm?
What are the stages of datawarehousing?
Explain what are the steps to build the data warehouse?
How many clustered indexes can u create for a table in dwh? In case of truncate and delete command what happens to table, which has unique id.
What is the function of etl when used in data warehousing?
Compare aggregates and data marts
if source contain 10records how you identify header and footer
What is operational data source (ODS)?
"A dimension table is wide but the fact table is deep," explain the statement in your own words.