Object Oriented Database
A relationship should be specified how in the ODL?

One direction starting with the second class
One direction starting with the first class
Neither direction
Both directions

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Object Oriented Database
Which of the following is true concerning the following statement: class Manager extends Employee

Manager is an abstract class and a superclass.
Manager is a concrete class and a subclass.
Manager is a concrete class and a superclass.
Manager is an abstract class and a subclass.

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