Reference Type (Core Services)

Reference types define the way in which two elements can relate to one another. The following system defined reference types are available by default:

• Parent-Child

  Defines a 'n..n' strong reference type which will be used to create hierarchical relationships. This is the default reference type when no reference type is specified. This reference type additionally requires unique names.

• Composition

  Defines a '1..n' composition reference type which will be used to create compositional hierarchies.

• Weak Reference

  Defines a 'n..n' weak reference type.

Additional reference types that are defined by applications or users can be specified using their names.