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• Most Recent Trend. Started with
Informix
• Universal Server.
• Relational systems incorporate
concepts from object databases leading to objectrelational.
• Object Database Standard:
ODMG-93, ODMG-version 2.0,ODMG-version 3.0.
• Exemplified in the latest
versions of Oracle-10i,DB2, and SQL Server and other DBMSs.
• Standards included in SQL-99
and expected to be enhanced in future SQL standards.
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