This Swimlane activity diagram for the library management system represents the overall process. The activity diagram is a visual representation of the flow of activity through a series of actions. The activity diagram is a critical diagram for describing the library management system. The activity is defined as a library management system action or operation. A library management system is software designed to manage all of a library's functions. It also assists librarians in maintaining a database of new books and books borrowed by members, along with their due dates. The Swimlane Swimlane activity diagram for the library management system is divided into classes responsible for working on or carrying out these activities.