Berkeley DB: DBcursor->del
Description: Berkeley DB: An embedded database programmatic toolkit.
Keywords: embedded,database,programmatic,toolkit,btree,hash,hashing,transaction,transactions,locking,logging,access method,access methods,Java,C,C++

### DBcursor->del |

`

###

    #include <db.h>

    int
    DBcursor->del(DBC *DBcursor, u_int32_t flags);

### Description: DBcursor->del

The DBcursor->del method deletes the key/data pair to which the cursor refers.

When called on a cursor opened on a database that has been made into a secondary index using the DB->associate method, the DB->del method deletes the key/data pair from the primary database and all secondary indices.

The cursor position is unchanged after a delete, and subsequent calls to cursor functions expecting the cursor to refer to an existing key will fail.

The DBcursor->del method will return DB_KEYEMPTY if the element has already been deleted. Unless otherwise specified, the DBcursor->del method returns a non-zero error value on failure and 0 on success.

### Parameters

flags
  The flags parameter is currently unused, and must be set to 0.

### Errors

The DBcursor->del method may fail and return one of the following non-zero errors:

DB_LOCK_DEADLOCK
  A transactional database environment operation was selected to resolve a deadlock.
DB_LOCK_NOTGRANTED
  A Berkeley DB Concurrent Data Store database environment configured for lock timeouts was unable to grant a lock in the allowed time.

DB_REP_HANDLE_DEAD
  The database handle has been invalidated because a replication election unrolled a committed transaction.
DB_REP_LOCKOUT
  The operation was blocked by client/master synchronization.

DB_SECONDARY_BAD
  A secondary index references a nonexistent primary key.

EACCES
  An attempt was made to modify a read-only database.

EINVAL
  If the cursor has not been initialized; or if an invalid flag value or parameter was specified.

EPERM
  Write attempted on read-only cursor when the DB_INIT_CDB flag was specified to DB_ENV->open.

### Class

DBC

### See Also

Database Cursors and Related Methods`

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