Figures from Chapter 7 Data Modeling Dirk Draheim

Fig. 7. 1. The data model of the bookshop as a PD model Category

Fig. 7. 2. A submodel of the bookshop title String Book abstract item Order.

Fig. 7. 3. A relation of arity 3 and an alternative model with a

Fig. 7. 4. A partial order in the data model and a valid state

Fig. 7. 5. A composition constraint with composite entity and contents model composite entity

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Figures from Chapter 7 Data Modeling Dirk Draheim, Gerald Weber Form-Oriented Analysis Springer, October 2004.

Fig. 7. 1. The data model of the bookshop as a PD model Category name String featured. Books title String Book abstract String item price Amount subcategories Order. Item order. Items Order quantity Number Customer authors buyer name Author email String full. Name String password String address street. Address String Address city state country Springer Verlag 2004 zip String Number card. Information Card. Information card. Type card. Number expiration cardholder Card. Type String Date String

Fig. 7. 2. A submodel of the bookshop title String Book abstract item Order. Item order. Items Order String price quantity Number Customer authors buyer Amount name Author email String full. Name String password String Springer Verlag 2004

Fig. 7. 3. A relation of arity 3 and an alternative model with a relationship Customer Offer contact Salesperson Springer Verlag 2004 Customer Offer Contact Salesperson

Fig. 7. 4. A partial order in the data model and a valid state of this model Partial order Fro to 2 fro 2 to To Data model Springer Verlag 2004 Data state

Fig. 7. 5. A composition constraint with composite entity and contents model composite entity detouring relation type weak entity type master relation types contents subsystem Springer Verlag 2004 external reference