R790 - modelint/shlaer-mellor-metamodel GitHub Wiki

R790 / 1:1

Update Reference Action changes reference to exactly one To Ref Instance

To Ref Instance is set by exactly one Update Reference Action

---

Using the example in R789, the new takeoff Runway instance is provided to the Update Reference Action so that its Identifier Attribute values may be obtained.

By definition, a To Ref Instance is designated as the input to a single Update Reference Action.