What Are Aggregate Tables?

Question

Accepted Answer

Aggregate tables are summary tables that store pre-calculated values to improve query performance in data warehousing.

Aggregate tables contain summarized data from multiple source tables.
They are used to speed up query performance by reducing the amount of data that needs to be processed.
Aggregate tables can be created at different levels of granularity, such as daily, weekly, or monthly.
They often include aggregated measures like sums, averages, or counts.
For example, in a sales data warehouse, an aggregate table could store the total sales amount by product category and month.

Accepted Answer

Aggregate tables are the tables which contain the existing warehouse data which has been grouped to certain level of dimensions. It is easy to retrieve data from the aggregated tables than the original table which has more number of records.

What Are Aggregate Tables?

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