sre

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.