Object-oriented Data Models

• Several models have been proposed for implementing in a database system.
• One set comprises models of persistent O-O Programming Languages such as C++ (e.g., in OBJECTSTORE or VERSANT), and Smalltalk (e.g., in GEMSTONE).

• Additionally, systems like O2, ORION (at MCC – then ITASCA), IRIS (at H.P.- used in Open OODB).

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