Object Oriented Database
ODL supports which of the following types of association relationships?

Unary and Binary and Ternary
Unary and Binary
Unary and Binary and Ternary and higher
Unary

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Object Oriented Database
An extent is which of the following?

A keyword that indicates that the subclass inherits from a superclass
Only one instance of a class within a database
A keyword that indicates that the superclass inherits from a subclass
The set of all instances of a class within a database

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