Explain me what are data marts?
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Define data warehouse?
What is scd1 , scd2 , scd3?
What are the fundamental elements of the data warehouse?
5.Explain ODS ?
Give some difference between oltp and olap.
Explain what are the different types of join operations?
What is the use of dimensional modeling in data warehousing?
What is difference between Mapplet and reusable transformation?
What is meant by metadata in context of a data warehouse?
What is critical column?
Can you state some of the innovations throughout history?
for data loading in oracle, what are conventional loading , what are conventional loading and direct-path loading?