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Object-Oriented Database
The ODMG Object Model supports only unary and binary relationships.
True
Correct Answer:
True
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Object-Oriented Database
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.
A collection of literals or object types is called a bag.
Literals do not have identifiers, and, therefore, cannot be individually referenced like objects.
An attribute's value is either a literal or an object identifier.
Database objects are almost always transient.
The ODMG Object Model requires that a relationship be specified in both directions.
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