9.16 Procedure for referencing and updating the database with the query language
A query expresses a processing request (inquiry) for a database as a string. A query is used to issue commands such as commands to search, update, and delete the data in a database to a system. To execute a query, use the javax.persistence.Query interface. The types of query include JPQL and native query. This section describes the procedure for referencing and updating the database with a query.
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