In simple terms, materialized views are the results of a query that are saved as tables. This means that materialized views do have a physical existence, because they take up disk space in the server.

Creating a materialized view To see all the steps in the creation of a materialized view, let’s take it one step at a time. The code for each step is shown in Listing C: 1.

This article explores the internals of materialized views and demonstrates how to precompute complex aggregates—having Oracle dynamically rewrite SQL to reference precomputed aggregate information.

Materialised view selection is a critical process in data warehousing that significantly enhances the performance of online analytical processing systems. This process involves the pre-computation ...