Technical Module C Object Modeling Objects Object – a valuable resource: Money (Account Receivable) Material (Product) Machines (Delivery Truck) Personnel (Employee) Environmental element of the firm (Customer) Described with data Includes the processes performed on it

UML Unified Modeling Language (UML) – a visual language used to document a system All SDLC methodologies All SDLC stages All applications All platforms

UML Structural diagrams (like snapshots) Use case Class Object Component (physical) Deployment (physical) Dynamic diagrams (like videos) Sequence Statechart Activity Collaboration

UML Rational Unified Process Stages of the object-oriented development methodology Inception Elaboration Construction Transition These are similar to the phased development methodology stages, and also incorporate the repetitive, prototyping action. Phased development can be followed using any modeling approach – including objects.

UML Use Case Diagram Illustrates use cases in association with each other, and with their actors Fig C.2: The Process Customer Order Use Case Diagram

UML Class Diagram Object class – a grouping of similar objects Class diagram – a grouping of object classes within a use case Fig C.3: Class Diagram Format

UML Class Diagram Fig C.6: Special Relationships

UML Class Diagram Multiplicity – the number of times an object can participate in an association Table C.1: Multiplicity Notation

UML Class Diagram Handling many-to-many relationships Fig C.7: An Association Class

UML Class Diagram Class attributes (data) Fig C.8: Sample Attribute Names

UML Class Diagram Class operations (processes) Fig C.9: Sample Operation Names

UML Class Diagram Encapsulation (What, not how) Inheritance Fig C.10: Inheritance Illustrated

UML Fig C.11: Class Diagram for the Fill Customer Order Use Case

UML Sequence Diagram Messages link object classes Fig C.13: Sequence Diagram of the Fill Customer Order Use Case

UML Statechart Diagram Shows how an object changes states Fig C.15: Statechart Diagram of the Customer Order Object

UML Object Diagram Status of an object at a point in time Fig C.16: Object Diagram of the Customer Order and Product Objects

UML Collaboration Diagram Shows message sequence Fig C.17: Collaboration Diagram of Customer, Telemarketer, and Customer Order Dialog

UML Activity Diagram Shows direction of process flow Fig C.18: Activity Diagram of Fill Customer Order Operations

UML Component Diagram Shows software and database components Fig C.19: Component Diagram of the Fill Customer Order Use Case

UML Deployment Diagram Shows the associations among nodes (run - time resources) and actors Fig C.20: Deployment diagram of the Fill Customer Order Use Case

UML Summary Table C.2: Categories of UML Diagrams