In this UML communication diagram for library management system, two primary components are depicted: objects, represented by square shapes, and messages, indicated by straight line with an arrowhead symbolizing message exchange between objects. Each message is labeled with an index, illustrating the sequential order of message transmission between the objects. The following diagram shows how a librarian efficiently manages various resources like books, staff, digital resources, and audio-visual materials within the library and the communication between these objects.
