Asked by: Olene Hinostroza
asked in category: General Last Updated: 15th May, 2020

Does materialized view create table?

When you create a materialized view, Oracle Database creates one internal table and at least one index, and may create one view, all in the schema of the materialized view. Oracle Database uses these objects to maintain the materialized view data. So having the table and materialized view with the same name is normal.

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Correspondingly, why use materialized view instead of a table?

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.

One may also ask, is materialized view a table? A materialized view, or snapshot as they were previously known, is a table segment whose contents are periodically refreshed based on a query, either against a local or remote table. Using materialized views against remote tables is the simplest way to achieve replication of data between sites.

Subsequently, question is, what is difference between table and materialized view?

Materialized view (MV) is for disconnected computing, the difference between table and MV is table you can do DML operations which will be seen by other users whereas the changes you do to MV will not be available to others until you update your database server.

Why do we create materialized views?

A materialized view in Oracle is a database object that contains the results of a query. They are local copies of data located remotely, or are used to create summary tables based on aggregations of a table's data. Materialized views, which store data based on remote tables are also, know as snapshots.

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