CRAM/ERAT Babel College of Alameda [email protected] Copyright © 2000 Patrick McDermott CRAM:...
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Transcript of CRAM/ERAT Babel College of Alameda [email protected] Copyright © 2000 Patrick McDermott CRAM:...
CRAM/ERAT Babel
College of [email protected]
Copyright © 2000 Patrick McDermott
CRAM: Class-Relationship-Attribute-MethodERAT: Entity-Relationship-Attribute-Trigger
Ha!
“The various OO methods use different (and often conflicting) terminology for these concepts. This is extremely frustrating but inevitable, given that OO languages are just as inconsiderate. It is in this area that the UML will bring some of its greatest benefits….”—Martin Fowler, UML Distilled, p. 53.
Context or “Camp”• CRC Cards: Class-Responsibility-Collaborator
• ERD: Entity-Relationship Diagrams– SAD: Traditional Systems Analysis & Design
• Relational: Relational Database Theory• Database: A Physical DB Table • Programmer: In the Code • UML: Unified Modeling Language
– OOAD: Object/Oriented Analysis & Design• Etc., etc., etc…: Any & All others
Category• CRC Cards: Class• ERD: Entity (Type) • Relational: Relation• Database: Table • Programmer: Layout, struct, class • UML: Class• Etc., etc., etc…: Type, File, Structure
Thing• CRC Cards: N/A• ERD: Entity• Relational: Tuple• Database: Row • Programmer: Record • UML: Object • Etc., etc., etc…: Occurrence, Instance
Connection• CRC Cards: Collaboration• ERD: Relationship • Relational: Foreign Key• Database: Database Key • Programmer: Pointer, Array, Containment• UML: Association, Aggregation,
Composition• Etc., etc., etc…: Has-a, Set, Pairing,
Hierarchy, Parent/Child, Owner/Members
Fact• CRC Cards: (Attribute)• ERD: Attribute • Relational: Attribute• Database: Column • Programmer: Variable • UML: Property • Etc., etc., etc…: Field, Item, Element
Behavior• CRC Cards: Responsibility• ERD: N/A (it’s in the DFD)
• Relational: N/A• Database: Service, Procedure• Programmer: Function()• UML: Method()• Etc., etc., etc…: Message, Operation,
Algorithm, Trigger, Routine, Subroutine, Process, Macro
Inheritance• CRC Cards: Superclass/Subclass• ERD: Supertype/Subtype• Relational: N/A• Database: 3 Variations• Programmer: Base/Derived• UML: Generalization/Specialization• Etc., etc., etc…: Is-a, Root/Branch/Leaf,
Parent/Child, Extension