How does a materialized view differ from a regular view in DB2?

  • Materialized views are physically stored on disk, while regular views are not
  • Materialized views are updated automatically when the underlying data changes, while regular views are not
  • Materialized views can be indexed for faster query performance, while regular views cannot
  • Materialized views can contain joins across multiple tables, while regular views cannot
A materialized view in DB2 is a database object that contains the results of a query and is physically stored on disk, allowing for faster query performance. Unlike regular views, which are virtual and only stored as a predefined query, materialized views are materialized or precomputed and updated automatically when the underlying data changes, ensuring data consistency. 
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