When you finish working with a database, you might want to close it so that you can concentrate on creating a new database (as you do in the next section). However, because Access allows you to have only one database open at a time, as soon as you begin creating a new database the currently open database closes. Opening an existing database also closes the current database (which is something you do later in this lesson).
If you want to close a database, there are a couple of possibilities: you can click the Close ( X ) button on the database window, or you can select File, Close . In either case, the database window closes, clearing the Access workspace.