---
name: "tdb_exists"
section: "3"
platform: "linux"
package: "libtdb-dev"
version: "2:1.4.13+samba4.22.11+dfsg-0+deb13u1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/tdb_exists"
---

# tdb\_exists(3)

check for the existence of a record in a tdb database

## NAME

tdb\_exists - check for the existence of a record in a tdb database

## SYNOPSIS

```
#include <tdb.h>

int tdb_exists(TDB_CONTEXT *tdb, TDB_DATA key);

```

## DESCRIPTION

Test to see if a key exists. *tdb* is a pointer returned by **tdb\_open** and *key* is a lump of data that is used as the index into the database. The TDB\_DATA structure is defined as:

```
typedef struct {
	char *dptr;
	size_t dsize;
} TDB_DATA;
```

## RETURN VALUE

If the key is found, 1 is returned; otherwise 0 is returned.

## AUTHORS

Software: Andrew Tridgell \<tridge@linuxcare.com\> and Luke Kenneth Casson Leighton Man page: Ben Woodard \<ben@valinux.com\>

## SEE ALSO

[**gdbm**(3)](/gdbm/3.md), **[tdb(3)](/tdb/3.md)**