Role Activity Diagrams (RADs) are a process modeling technique that focuses on the roles and responsibilities of individuals or groups within an organization. RADs are useful for understanding system behavior and identifying potential issues, and can communicate system behavior to stakeholders like developers and end-users. RADs include roles representing actors like users, activities representing tasks roles perform, and flows representing the sequence of activities to achieve a goal.

1. Software Requirements Engineering
System Modelling for Requirements Analysis-II
Week 08

8. Role Activity Diagrams
• Role Activity Diagrams (RADs) are a type of process modeling
technique that focuses on the roles and responsibilities of individuals
or groups within an organization
• RADs are useful for understanding the behavior of a system and can
be used to identify potential issues or areas for improvement.
• They can also be used to communicate the system's behavior to
stakeholders, such as developers or end-users.

9. Conti…
• The basic components of a RAD include roles, activities, and flows
• Roles represent the different actors in the system, such as users or
external systems.
• Activities represent the tasks or functions that these roles perform,
such as creating a new account or processing a payment.
• Flows represent the sequence of activities that must be performed to
achieve a specific goal.