R1002 - modelint/shlaer-mellor-metamodel GitHub Wiki

R1002 / 1:Mc

Update Action updates instances in exactly one Instance Flow

Instance Flow provides instances to update by zero, one or many Update Action

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An Update Action will update a set of Attributes for any number of supplied instances. The same input values will be applied to each of these instances. If the input instance set is empty, no update will occur, but the action will be considered successful.

An Instance Flow can flow into many different actions and might not feed an Update Action at all.