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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
A keyword that indicates that the superclass inherits from a subclass
The set of all instances of a class within a database
Only one instance of a class within a database
Correct Answer:
The set of all instances of a class within a database
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Object-Oriented Database
Which of the following is true concerning an ODBMS?
ODL supports which of the following types of association relationships?
Using ODL, you can define which of the following?
If you know all the possible values that an attribute can have, you can enumerate those values in ODL.
The ODMG Object Model supports only unary and binary relationships.
Before specifying a key for a class, you must specify its extent.
In ODL, you specify an operation using parentheses after its name.
ODL supports the abstract keyword for classes and operations.
The Object Model supports different literal types, but does not support atomic literals, collection literals, and structured literals.
An attribute's value is always literal.
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