C8 — Planning Constraints

Purpose & Usage

The C8 Viewpoint is concerned with the identification and description of assumptions (Strategic Constraints).

• Capability Planning.
• Planning Assumptions.
• Implementation Planning.

Scope

• Shall contain Capabilities relevant for the entity of interest.
• Shall contain Strategic Constraints that apply to the Capabilities.
• May show Strategic Rationale relating to Strategic Constraints.
• May show Effects the Capabilities desire.
• May show the Vision that requires the Capability and the Goal it specifies.

Representation

• Tabular.
• Benefits diagram.
• Parametric diagram.

Cut-out (Meta-model)

flowchart TB
    StrategicConstraint["Strategic Constraint"]:::naf
    Capability:::naf
    EnterpriseVision["Enterprise Vision"]:::naf
    StrategicRationale["Strategic Rationale"]:::naf
    Effect:::naf
    Goal:::naf
    StrategicConstraint -->|"applies to"| Capability
    EnterpriseVision -->|"requires"| Capability
    StrategicConstraint -->|"originates from"| StrategicRationale
    Capability -->|"desires"| Effect
    EnterpriseVision -->|"specifies"| Goal
    classDef naf fill:#C5E0B4,stroke:#385723,color:#000

Notes on the Cut-out

Planning Assumptions, as defined in NAFv3, are represented as a Strategic Constraint (an assumption has a lesser level of rigour than a constraint).

NAFv4 Compliant Example

flowchart LR
    C1["«Constraint» Search covers radius of 10 km in 3 simultaneous missions"]:::naf
    C2c["«Constraint» C2 unit must be permanently available"]:::naf
    MaritimeSAR["«Capability» Maritime SAR"]:::naf
    C1 -->|"applies to"| MaritimeSAR
    C2c -->|"applies to"| MaritimeSAR
    classDef naf fill:#C5E0B4,stroke:#385723,color:#000