When you finish working with an Express database, you can remove (detach) it.
Note: You cannot detach a database that is being used by an active query. If a query is in process, or if query results are displayed in an open report, then you must cancel the query or delete the results before you can detach the database.
To detach a database:Display the Express Query dialog box.
In the Choose Database box, select the database that you want to detach.
Choose Remove Database.
Repeat Steps 2 and 3 for each database that you want to detach.
About working with Express data
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