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Modelling System Requirements: Events & Things
- 1. Modelling System Requirements: Events & Things Module 5
- 9. Models Used in Analysis
- 10. Models Used in Design
- 12. Events Affecting a Charge Account Processing System
- 17. Sequence of Actions that Lead up to Only One Event Affecting the System
- 18. Sequence of “Transactions” for One Specific Customer Resulting in Many Events
- 19. Events Deferred Until the Design Phase
- 22. Information about each Event in an Event Table
- 24. Types of Things
- 27. Relationships Naturally Occur Between Things
- 32. Data Entities Compared with Objects
- 34. Cardinality Symbols of Relationships
- 35. Expanded ERD with Attributes Shown
- 36. Customers, Orders, and Order Items
- 37. RMO Customer Support ERD
- 39. A Generalization/Specialization Hierarchy for Motor Vehicles
- 40. A Generalization/Specialization Hierarchy for Orders
- 41. Aggregation or Whole-Part Relationships
- 42. The Class Symbol for the Class Diagram
- 43. Bank Account System Class Diagram
- 45. Where You Are Headed