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Object-Oriented Database
In ODL, you specify an operation using parentheses after its name.
True
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True
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Object-Oriented Database
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.
An ordered collection of elements of the same type are called sets.
Specifying a key ensures that no two objects belonging to a class have the same value for the key attribute(s).
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