Creating an Association

This section provides information to create Association between Entities.

An association is a named relationship between two entities. Association defines a peer-to-peer relationship between participating entity types and can support different multiplicities at both the ends. An example of an association is the relationship between the Customer and Order entities.

You can create three types of association:

  • Single Association - This is the unidirectional association, which allows navigation in only one direction. See Creating a Single Association.
  • Bi-directional Association - The bi-directional association allows navigation in both directions of the association. The bi-directional association is defaulted to one-to-many. See Creating a Bidirectional Association.
  • Self Association - Self association has the ends of the association point to the same entity. See Creating a Self Association.