Based on the Information Engineering notation. This is an extension to the existing Class Diagram. This extension adds: • Additional relations for the Information Engineering notation. • An entity alias for class diagrams. All other features of class diagrams are also supported. 19.1 Information Engineering Relations Type Symbol Zero or One |o-- Exactly One ||-- Zero or Many }o-- One or Many }|-- . . . . . . . . . . . . . . . . . . 269 19 Entity Relationship Diagram 270 19.1 Information Engineering Relations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 270 19.2 Entities . .

Based on the Information Engineering notation. This is an extension to the existing Class Diagram. This extension adds: • Additional relations for the Information Engineering notation. • An entity alias for class diagrams. All other features of class diagrams are also supported. 20.1 Information Engineering Relations Type Symbol Zero or One |o-- Exactly One ||-- Zero or Many }o-- One or Many }|-- . . . . . . . . . . . . . . . . . . 275 20 Entity Relationship Diagram 276 20.1 Information Engineering Relations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 276 20.2 Entities . .

Based on the Information Engineering notation. This is an extension to the existing Class Diagram. This extension adds: • Additional relations for the Information Engineering notation. • An entity alias for class diagrams. All other features of class diagrams are also supported. 20.1 Information Engineering Relations Type Symbol Zero or One |o-- Exactly One ||-- Zero or Many }o-- One or Many }|-- . . . . . . . . . . . . . . . . . . 290 20 Entity Relationship Diagram 291 20.1 Information Engineering Relations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 291 20.2 Entities . .

Based on the Information Engineering notation. This is an extension to the existing Class Diagram. This extension adds: • Additional relations for the Information Engineering notation. • An entity alias for class diagrams. All other features of class diagrams are also supported. 20.1 Information Engineering Relations Type Symbol Zero or One |o-- Exactly One ||-- Zero or Many }o-- One or Many }|-- . . . . . . . . . . . . . . . . . . 388 20 Entity Relationship Diagram 389 20.1 Information Engineering Relations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 389 20.2 Entities . .