Can you explain the star schema for OLAP
Q
What are fact tables and dimension tables in OLAP ?
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A
The dimensions and measures are physically represented by a star schema. Dimension tables revolve around fact table. A fact table contains a column for each measure as well as a column for each dimension. Each dimension column has a foreign-key relationship to the related dimension table, and the dimension columns taken together are the key to the fact table.
2007-10-25, 5025👍, 0💬
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What is the use of OLAP
What is the use of OLAP ? OLAP is useful because it provides fast and interactive access to aggregated data and the ability to drill down to detail. 2007-10-25, 4946👍, 0💬