Describe the differences between a data warehouse and data mart.
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What is the main difference between schema in rdbms and schemas in datawarehouse?
Explain in simple terms, the concept of Data Mining.
What is latest version of power center / power mart?
What is Molap and Rolap? What is Diff between Them?
How many ways we test the universe & Report?
Explain when do we analyze the tables? How do we do it?
in general which algorithms for used?
what are the types of dimension tables
Explain differences between star and snowflake schemas?
What is the difference between agglomerative and divisive hierarchical clustering?
2.What is staging area ?
4 Answers HCL, IBM, iFlex, TCS,
Explain what are the various reporting tools in the market?