Web Reference: What is a Materialized View? A materialized view is a duplicate data table created by combining data from multiple existing tables for faster data retrieval. For example, consider a retail application with two base tables for customer and product data. Jul 11, 2025 · What is a Materialized View in SQL? A materialized view stores the result of a query physically in the database. It can be refreshed manually or automatically to reflect updates in the underlying tables. The process of keeping the materialized views updated is known as view maintenance. A critical element of how we define “materialized” is in terms of data storage. Specifically, a materialized view is a database object that physically stores the data results it contains from a query. This means that, unlike a regular view, a materialized view does not retrieve data dynamically.
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