Overview of Domain Models

 

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Domain-Specific Language Tools 

Overview of Domain Models 

 

A domain model  = domain classes  + domain relationships.

Several terms refer to the parts of a domain model, as shown in the following illustration. For more information about this domain model, see Overview of Library.dsl.

A Domain Model

The diagram illustrates the following terms:

1. The domain model (everything inside the dotted line).

2. A domain class.

3. Another domain class.

4. The domain relationship between the two classes.

5. A multiplicity indicator (*). (In this domain model, a library can have many members.)

6. Another multiplicity indicator (1). (In this domain model, each person can be a member of only one library.)

7. A source role.

8. A target role.

This domain model defines a Library domain class, a Person domain class, and a relationship between them. The relationship is called LibraryHasMembers, and it shows that one library can be associated with any number of people.