Berkeley DB

DB→del

						#include <db.h>
						int
						DB→del(DB *db, DB_TXN *txnid, DBT *key, u_int32_t flags);
					

Description

The DB→del function 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 transaction-protected, the txnid parameter is a transaction handle returned from txn_begin; otherwise, NULL.

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

The DB→del function returns a non-zero error value on failure, 0 on success, and DB_NOTFOUND if the specified key did not exist in the file.

Errors

The DB→del function may fail and return a non-zero ...