.\" $Id: sdbm.3,v 1.2 90/12/13 13:00:57 oz Exp $
.TH SDBM 3 "1 March 1990"
.SH NAME
-sdbm, sdbm_open, sdbm_prep, sdbm_close, sdbm_fetch, sdbm_store, sdbm_delete, sdbm_firstkey, sdbm_nextkey, sdbm_hash, sdbm_rdonly, sdbm_error, sdbm_clearerr, sdbm_dirfno, sdbm_pagfno \- data base subroutines
+sdbm, sdbm_open, sdbm_prep, sdbm_close, sdbm_fetch, sdbm_store, sdbm_delete, sdbm_exists, sdbm_firstkey, sdbm_nextkey, sdbm_hash, sdbm_rdonly, sdbm_error, sdbm_clearerr, sdbm_dirfno, sdbm_pagfno \- data base subroutines
.SH SYNOPSIS
.nf
.ft B
.sp
int sdbm_delete(\s-1DBM\s0 *db, datum key)
.sp
+int sdbm_exists(\s-1DBM\s0 *db, datum key)
+.sp
datum sdbm_firstkey(\s-1DBM\s0 *db)
.sp
datum sdbm_nextkey(\s-1DBM\s0 *db)
.IX sdbm_fetch "" "\fLsdbm_fetch\fR \(em fetch \fLsdbm\fR database data"
.IX sdbm_store "" "\fLsdbm_store\fR \(em add data to \fLsdbm\fR database"
.IX sdbm_delete "" "\fLsdbm_delete\fR \(em remove data from \fLsdbm\fR database"
+.IX sdbm_exists "" "\fLsdbm_exists\fR \(em test \fLsdbm\fR key existence"
.IX sdbm_firstkey "" "\fLsdbm_firstkey\fR \(em access \fLsdbm\fR database"
.IX sdbm_nextkey "" "\fLsdbm_nextkey\fR \(em access \fLsdbm\fR database"
.IX sdbm_hash "" "\fLsdbm_hash\fR \(em string hash for \fLsdbm\fR database"
routine, and associate data with a key by using the
.BR sdbm_store (\|)
routine.
+.BR sdbm_exists (\|)
+will say whether a given key exists in the database.
.LP
The values of the
.I flags