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# Object-Level Modify Query

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Using an `ObjectLevelModifyQuery`, you can query your data source to create, update, and delete objects. This section describes the following:

- WriteObjectQuery

- UpdateObjectQuery

- InsertObjectQuery

- DeleteObjectQuery

- UpdateAllQuery

- Object-Level Modify Queries and Privately Owned Parts

For more information, see "Creating, Updating, and Deleting Objects With a DatabaseQuery".

Note: Oracle recommends that you create and update objects using a TopLink `UnitOfWork`: doing so is the most efficient way to manage transactions, concurrency, and referential constraints. For more information, see "Understanding TopLink Transactions".