dbm_delete()

delete record from database 

Function

SYNOPSIS

#include <ndbm.h>

int dbm_delete(DBM *db, datum key);

DESCRIPTION

The dbm_delete() function deletes a record and its key from the database specified by db. The argument key is a datum that has been initialized by the application program to the value of the key that identifies the record to be deleted.

A datum consists of at least two members, dptr and dsize. The dptr member points to an object that is dsize bytes in length. Arbitrary binary data, as well as character strings, may be stored in the object pointed to by dptr.

PARAMETERS

db 

Points to the database where the record is to be deleted from. This must be a pointer returned by a prior call to dbm_open().

key 

Is the key for the record to be deleted.

RETURN VALUES

On success, dbm_delete() returns 0. Otherwise, it returns a negative value.

CONFORMANCE

UNIX 98.

MULTITHREAD SAFETY LEVEL

Unsafe.

PORTING ISSUES

None

AVAILABILITY

PTC MKS Toolkit for Professional Developers
PTC MKS Toolkit for Professional Developers 64-Bit Edition
PTC MKS Toolkit for Enterprise Developers
PTC MKS Toolkit for Enterprise Developers 64-Bit Edition

SEE ALSO

Functions:
dbm_clearerr(), dbm_close(), dbm_error(), dbm_fetch(), dbm_firstkey(), dbm_nextkey(), dbm_open(), dbm_store(), dbopen()

PTC MKS Toolkit 10.5 Documentation Build 40.