Model and Subject Area Diagram

This diagram shows the storage of Subject Area membership information and makes the following assertions:

• Abstract_ERwin_Object is a type of Abstract_Object
• The object types Abstract_Model_Node, Model, Subject_Area, and Relationship are all types of Abstract_Objects
• The object types Subtype_Symbol and Abstract_Entity are both types of Abstract_Model_Nodes
• Abstract_Model_Nodes are owned by Model
• Relationships are owned by Model
• Subject_Areas are owned by Model
• Subject_Areas hold their collection of member Abstract_Model_Nodes in Referenced_Entities_Ref. When viewed using SCAPI, this is held as a vector reference property on the Subject_Area. When viewed using ODBC, the associative table Referenced_Entities_Ref stores this membership information.
• Subject_Areas hold their collection of member Relationships in Referenced_Relationships_Ref. When viewed using SCAPI this is held as a vector reference property on the Subject_Area. When viewed using ODBC, the associative table Referenced_Relationships_Ref stores the membership information.

  Note: This data is maintained by erwin� Data Modeler based on the data in Referenced_Entities_Ref. Do not attempt to directly change this data.

Model and Subject Area Diagram--UML Notation:

Model and Subject Area Diagram--IDEF1X Notation: