What is the difference between views and materialized views in Oracle?

Materialized views are disk based and are updated periodically based upon the query definition. Views are virtual only and run the query definition each time they are accessed.

What is a main difference between regular views and materialized views?

Views are generally used when data is to be accessed infrequently and data in table get updated on frequent basis. On other hand Materialized Views are used when data is to be accessed frequently and data in table not get updated on frequent basis.

What is materialized views in Oracle?

A materialized view is a database object that contains the results of a query. You can select data from a materialized view as you would from a table or view. In replication environments, the materialized views commonly created are primary key, rowid, object, and subquery materialized views.

When should we use materialized view?

Materialized views are basically used to increase query performance since it contains results of a query. They should be used for reporting instead of a table for a faster execution.

What are the advantages of materialized views?

Advantages of Materialized Views Materialized views can improve the performance of queries that use the same subquery results repeatedly. Materialized views are automatically and transparently maintained by Snowflake. A background service updates the materialized view after changes are made to the base table.

Why do we use the materialized view instead of a table or views?

Why materialized views are used?

Why use materialized view instead of a view?

TL;DR: Querying materialized views, unlike querying tables or logical views, can reduce query costs by maintaining results in memory that are only updated when necessary.

Which is better view or materialized view?

Materialized View responds faster in comparison to View. It is because the materialized view is precomputed and hence, it does not waste time in resolving the query or joins in the query that creates the Materialized View. Which in turn responses faster to the query made on materialized view.