Mandatory

• Type: The value must be a Information Entity.

  The other role in the association between two Information Entities.

• Opposite: The value must be a Part Role.

  The opposite role of the association

• Aggregation: The value must be 'none'.

  The aggregation should be none

Rules

• Multiplicity: The value shall be a value fulfilling the regular expression: 1|(0\.\.1)|(1\.\.1).

  A distinct number or an interval between two numbers indicating how many instances of the associated information entity that participate in the relation from the current information entity´s perspective.

  The value * indicates that any number of participants are allowed.

• Visibility: The value shall be 'public'.

  The visibility must be public

• Navigable: The value shall be 'true'.

  Indicates if the association is navigable.

Recommendations

• Name: The value can be anything.

  The name should indicate what kind of role the associated Information Entity plays towards the current Information Entity.

• Documentation: The value can be anything.

  A short description of what the role represents from the current Information Entity´s perspective.

Information Entity (Class)

Information Entity (Class)

Ownership (Association)