1. Object-Oriented Database Processing
Chapter 17
Object-Oriented
Database Processing
David M. Kroenke
© 2000 Prentice Hall

2. Object-Oriented Programming
OOP; a way of designing and coding programs which views programs as sets of data structures that have both data elements and program instructions
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3. OOP Terminology Encapsulated complete in itself
Encapsulated structure an OOP object that has both attributes (properties) and methods
Interface external appearance of an object
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4. OOP Terminology
Implementation “the encapsulated internals of an object”
Inheritance “automatically assuming the attributes and methods of another object at a higher class”
Polymorphism “situation in which one name can be used to invoke different functions”
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5. OOP Terminology
Object Class “the logical structure of an object (name, attributes, methods)”
Object Class Library “a group of object classes”
Objects “instances of objects”
Transient vs. Persistent “volatile vs. permanent”
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6. Sample Objects, Methods, and Attributes
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Figure 17-2
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7. Sample Object Data Structures
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Figure 17-4
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8. Swizzling
“The process of transforming permanent identifiers into in-memory addresses”
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9. Tasks for Object Persistence
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Figure 17-5
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10. Application Development Work for Object Persistence
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Figure 17-8
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11. ODBMS Advantages and Disadvantages
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Figure 17-9
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12. ODBMS Standards
SQL3 “an extension to SQL92 that includes support for OODBMS”
Abstract data type “ADT; user-defined structure that is equivalent to an OOP object”
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13. ODMG-93
“Object Data Management Group; a consortium of object database vendors and experts that developed a definition of interfaces for object data management products in 1993”
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14. Key Elements of the ODMG Object Model
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Figure 17-15
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15. ODMG Relationship Operations
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Figure 17-16
© 2000 Prentice Hall