A Primary Key Is A(n) ____________ That Contains Data Unique

question 44

Short Answer

A primary key is a(n) ____________ that contains data unique to a record.

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Definitions:

Derived Classes

Classes that extend the functionality of an existing class (the base class) by inheriting its properties and methods, potentially overriding some of them with new implementations.

Copy Constructor

A constructor in object-oriented programming that initializes an object using another object of the same class.

Limitations

Constraints or restrictions that limit the scope or functionality of something.

Downcasting

Converting a reference of a parent class to a reference of a child class, requiring explicit type-casting in languages like Java.