---
name: "mongoc_client_get_default_database"
section: "3"
platform: "linux"
package: "libmongoc-doc"
version: "1.30.4-1+deb13u3"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/mongoc_client_get_default_database"
---

# mongoc\_client\_get\_default\_database(3)

## SYNOPSIS

```
mongoc_database_t *
mongoc_client_get_default_database (mongoc_client_t *client);
```

Get the database named in the MongoDB connection URI, or **NULL** if the URI specifies none.

Useful when you want to choose which database to use based only on the URI in a configuration file.

## PARAMETERS

- •

  **client**: A *mongoc\_client\_t*.

## RETURNS

A newly allocated *mongoc\_database\_t* that should be freed with *mongoc\_database\_destroy()*.

## EXAMPLE

Default Database Example

```
/* default database is "db_name" */
mongoc_client_t *client = mongoc_client_new ("mongodb://host/db_name");
mongoc_database_t *db = mongoc_client_get_default_database (client);
assert (!strcmp ("db_name", mongoc_database_get_name (db)));
mongoc_database_destroy (db);
mongoc_client_destroy (client);
/* no default database */
client = mongoc_client_new ("mongodb://host/");
db = mongoc_client_get_default_database (client);
assert (!db);
mongoc_client_destroy (client);
```

## AUTHOR

MongoDB, Inc

## COPYRIGHT

2009-present, MongoDB, Inc.