Previous or older versions of Access supports an access security methodology called the System Database. The system database is a separate database from the access database file and held security related information and permissions. Access database administrator would use a tool named the Workgroup Administrator to connect a system database with a specific access database. As the system database allowed the access database administrator to provide usernames, group name and password along with the users and group specific permission on specific access objects (tables, queries, form, reports, etc.).
But now in the latest version of access uses robust user security generally uses SQL server database back-ends called Access Data Project (.adp). In this security type user’s security can be controlled at a very granular level using SQL Server security. This security type works more efficient methodology for handling security when integrated with Windows security making as compared to the separate usernames and passwords associated with Access System Database.