L4-P4 — Activity to Function Mapping

Purpose & Usage

The L4 -P4 Viewpoint is concerned with addressing the linkage between Resource Functions and Operational Activities specified in L4 as well as the linkage between Resource Functions and Service Functions specified in the S4.

• Requirements Definition.
• Process Mapping.
• Tracing functional system requirements to user requirements.
• Tracing solution options to requirements.
• Identification of overlaps.

Scope

• Shall contain the traceability between Resource Functions and Operational Activities.
• May trace Resource Functions to Service Functions defined in the S4.
• May show Physical Active Resources that use or perform the Resource Functions.

Representation

• Tabular.
• Matrix.
• Diagram.

Cut-out (Meta-model)

flowchart TB
    SF["Service Function"]:::service
    OA["Operational Activity"]:::activity
    RF["Resource Function"]:::config
    PAR["Physical Active Resource"]:::config
    RF -->|"realizes"| SF
    RF -->|"realizes"| OA
    PAR -->|"performs"| RF
    PAR -->|"uses"| RF
    classDef service fill:#E5C1E5,stroke:#7B4F7B,color:#000
    classDef activity fill:#9DC3E6,stroke:#1F4E79,color:#000
    classDef config fill:#F4B084,stroke:#833C0C,color:#000

NAFv4 Compliant Example

flowchart TB
    Rescue["«Service Function» Rescue"]:::service
    CtrlRescue["«Operational Activity» Control Rescue"]:::activity
    CTR["«Resource Function» Conduct Tactical Response"]:::config
    CTR -->|"realizes"| Rescue
    CTR -->|"realizes"| CtrlRescue
    classDef service fill:#E5C1E5,stroke:#7B4F7B,color:#000
    classDef activity fill:#9DC3E6,stroke:#1F4E79,color:#000
    classDef config fill:#F4B084,stroke:#833C0C,color:#000