Berkeley DB

Db::del

						#include <db_cxx.h>
						int
						Db::del(DbTxn *txnid, Dbt *key, u_int32_t flags);
					

Description

The Db::del method removes key/data pairs from the database. The key/data pair associated with the specified key is discarded from the database. In the presence of duplicate key values, all records associated with the designated key will be discarded.

If the operation is to be transactionally protected, the txnid parameter is a transaction handle returned from DbEnv::txn_begin; otherwise, NULL.

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

The Db::del method either returns a non-zero error value; or throws an exception that encapsulates a non-zero error value on failure, 0 on success, and DB_NOTFOUND if the specified key did not ...