What are materialized views in Oracle and how do they work?
An example of an AI chatbot conversation about materialized views in Oracle databases.
What are materialized views in Oracle and how do they work?
Materialized views in Oracle are database objects that store the result of a query. They can be refreshed periodically to reflect changes in the underlying data.
What are the benefits of using materialized views?
The benefits include improved query performance, reduced load on the database, and the ability to pre-aggregate data.
How do I create a materialized view in Oracle?
You can create a materialized view using the CREATE MATERIALIZED VIEW statement, specifying the query and refresh options.
Can I refresh a materialized view automatically?
Yes, you can set up automatic refreshes using the ON COMMIT or ON DEMAND options when creating the materialized view.
What happens if the underlying data changes?
If the underlying data changes, the materialized view will need to be refreshed to reflect those changes, depending on your refresh strategy.
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