Chapter 3. The DBcursor Handle
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## Chapter 3. The DBcursor Handle

A DBcursor object is a handle for a cursor into a Berkeley DB database.

DBcursor handles are not free-threaded. Cursor handles may be shared by multiple threads if access is serialized by the application.

You create a DBcursor using the DB->cursor() method.

If the cursor is to be used to perform operations on behalf of a transaction, the cursor must be opened and closed within the context of that single transaction.

Once DBcursor->close() has been called, the handle may not be accessed again, regardless of the method's return.

## Database Cursors and Related Methods

Database Cursors and Related Methods | Description
--- | ---
DB->cursor() | Create a cursor handle
DBcursor->close() | Close a cursor handle
DBcursor->cmp() | Compare two cursors for equality.
DBcursor->count() | Return count of duplicates for current key
DBcursor->del() | Delete current key/data pair
DBcursor->dup() | Duplicate the cursor handle
DBcursor->get() | Retrieve by cursor
DBcursor->put() | Store by cursor
DBcursor->set_priority(), DBcursor->get_priority() | Set/get the cursor's cache priority

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DB->verify() | Home | DB->cursor()