An extent is which of the following? A keyword that indicates that the subclass inherits from a superclass The set of all instances of a class within a database Only one instance of a class within a database A keyword that indicates that the superclass inherits from a subclass TRUE ANSWER : ? YOUR ANSWER : ?
ODL supports which of the following types of association relationships? Unary and Binary Unary and Binary and Ternary and higher Unary and Binary and Ternary Unary TRUE ANSWER : ? YOUR ANSWER : ?
A relationship should be specified how in the ODL? One direction starting with the second class Neither direction One direction starting with the first class Both directions TRUE ANSWER : ? YOUR ANSWER : ?
Using OQL, you may do which of the following? Return a collection of elements without duplicates. Return an entire collection of elements including duplicates. Return a specific subset of elements using a given criteria. All of these TRUE ANSWER : ? YOUR ANSWER : ?
ODL supports the abstract keyword for classes and operations. True False TRUE ANSWER : ? YOUR ANSWER : ?
Specifying a key ensures that no two objects belonging to a class have the same value for the key attribute(s). False True TRUE ANSWER : ? YOUR ANSWER : ?
In ODL, you specify an operation using parentheses after its name. True False TRUE ANSWER : ? YOUR ANSWER : ?