4.3.2 Constraint

Any object or property may have associated constraints indicating a qualitative objective or a quantitative metric to be met.

Constraints based on metrics are measurable, such that the status of a metric being valid is computer-interpretable. Metric constraints are based on simple conditional logic such as greater than a particular value or included within a specified list or table. Constraints may be combine multiple metrics using boolean logic such as AND, OR, XOR, or NOT.

Figure 7 illustrates an instance diagram.

Figure 7 — Constraint

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