Design items

Class, representing an entity.

Entity attribute.

Association, shows the links between entities.

* Relation : Many, or Many to Many

1 Relation : One

0..* Relation : Zero to Many

1..* Relation : One to Many

Stereotype list

An entity has an « Entity » stereotype. Additional stereotypes may be applied:

• TransientObject

Stereotype applied to a non persisted entity.

• Criteria

Stereotype applied to a criteria search entity.

An entity attribute may have various stereotypes:

• Identifier

Defines an attribute as an identifier.

• password

Defines an attribute as a password for the authentication mechanism.

• Unique

Defines an attribute as unique.

• userid

Defines an attribute as a username for the authentication mechanism.

• Required

Defines an attribute as mandatory.

• Role

Defines an attribute as a role (actor) for the authorization mechanism.

Rules

• An entity must have a unique name.
• An entity must be « Entity » stereotyped.
• Entities must be contained in a « PK_ENTITY » package.
• An entity can not be used as a parameter, or as a return type in a method.
• An entity can not be used as a class attribute (except entities made from association links, as well as BOs inheriting from those attributes)