Securing an Access database has many features similar to midrange and mainframe database products, and is quite state-of-the-art! Users, Groups, and Permissions can each be created, assigned, deleted, and/or mixed.
A secure Access database is one operating within its own Workgroup (or something similar to a PC session). This named workgroup stores group, user, and permission values outside Access in an independant file everyone opening the secured database must have on his/her idividual PC. The process is complex and in my opinion way beyond any 400 point (or 10000 point question). MANY things MUST be done in an orderly logical step-by-step procedure either through the Securrity Wizard or manually and you MUST know where you are going because the last step locks the person creating the .mdb file and security system out!! For sure read and understand all about Workgroups, Users, Groups, Permissions, and database Objects and make an unsecure backup BEFORE you begin.