Set Action - modelint/shlaer-mellor-metamodel GitHub Wiki

The union, difference, and intersection operations are provided by means of the Set Action.

In fact, the relational join operation is included since it has the same input/output signature even though it isn't a fundamental set operation.

Two Non Scalar Flows are input and a Table Flow is output.

Identifiers

1. ID + Activity + Domain

Attributes

Operation

The name of a supported relational set operation.

Type: Set Op Name :: [ join | union | intersect | subtract ]