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Chapter 21 - PowerPoint PPT Presentation


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Chapter 21. Object Database Standards, Languages, and Design. Overview of the Object Model of ODMG. Objects and Literals Built-in Interfaces for Collection Objects Atomic (User-Defined) Objects Interfaces, Classes, and Inheritance Extents, Keys, and Factory Objects.

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chapter 21

Chapter 21

Object Database Standards, Languages, and Design

overview of the object model of odmg
Overview of the Object Model of ODMG
  • Objects and Literals
  • Built-in Interfaces for Collection Objects
  • Atomic (User-Defined) Objects
  • Interfaces, Classes, and Inheritance
  • Extents, Keys, and Factory Objects
the object query language oql
The Object Query Language OQL
  • Simple OQL Queries, Database Entry Points, and Iterator Variables
  • Query Results and Path Expressions
  • Other Features of OQL
object database conceptual design
Object Database Conceptual Design
  • Differences Between Conceptual Design of ODB and RDB
  • Mapping and EER Schema to an ODB Schema