Instant Messaging System Use Case Diagram

This Use Case Diagram is a graphic depiction of the interactions among the elements of Instant Messaging System. It represents the methodology used in system analysis to identify, clarify, and organize system requirements of Instant Messaging System. The main actors of Instant Messaging System in this Use Case Diagram are: Super Admin, System User, Users, Anonymous Users, who perform the different type of use cases such as Manage Message, Manage Conference, Manage Client, Manage Client Server, Manage Status, Manage Theme, Manage Popup, Manage Users and Full Instant Messaging System Operations. Major elements of the UML use case diagram of Instant Messaging System are shown on the picture below.

The relationships between and among the actors and the use cases of Instant Messaging System:

• Super Admin Entity : Use cases of Super Admin are Manage Message, Manage Conference, Manage Client, Manage Client Server, Manage Status, Manage Theme, Manage Popup, Manage Users and Full Instant Messaging System Operations
• System User Entity : Use cases of System User are Manage Message, Manage Conference, Manage Client, Manage Client Server, Manage Status, Manage Theme, Manage Popup
• Users Entity : Use cases of Users are Send Chat Requests, Approve Requests, Send Chat Message, Check Chat History, Search Users
• Anonymous Users Entity : Use cases of Anonymous Users are View Information, Fill Contact Us, Search Content

Use Case Diagram of Instant Messaging System :