"PIRRIDM" is an acronym derived as follows:
- There are four basic components to requirements:
- Processes, which identifies how work is done within an organization.
- Information, which identifies what is needed to get work done in an organization.
- Rules, which identify the goals and limitations of the work that is done in an organization.
- Relationships, which identify how the first three components fit together to get work done in an organization.
- There are three techniques that a business analyst normally uses to define requirements:
- Identify what is to be included in the Components.
- Document the contents of the Components.
- Maintain the contents of the Components.