Explain Cubes and OLAP Cubes.

1.	Explain Cubes and OLAP Cubes.
Answer» In ETL, cubes are DATA processing units which CONTAIN dimensions and fact TABLES from the data warehouse and provide multi-dimensional analysis. OLAP or Online Analytics Processing STORES large data in a multi-dimensional form for reporting purpose. The OLAP cubes consist FACTS called as measures categorized by dimensions.

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