Object Oriented Methodology -
OOM - 02, Study notes of Object
Oriented Programming
"Has-a" Relationship - correct answerThe concept of Composition, in which one class is
composed of multiple, simpler classes, can be described using the phrase "has-a". For
example, when a Car object includes Body and Engine objects, the Car "has-a" Body
and the Car "has-an" Engine.
"Is-a" Relationship - correct answerThe concept of inheritance, in which one class is
derived from another class, can be described as an "is-a" relationship. For example,
when a Student class inherits a Person class, the Student "is a" Person.
Abstraction/Information Hiding - correct answerAbstraction, or "Information Hiding," is a
term associated with Encapsulation. Through the process of Abstraction, a programmer
hides all but the relevant data about and interaction with an object, in order to reduce
complexity and increase efficiency, especially when improvements or modifications
need to be made from time to time.
Child Class - correct answerA class that inherits the characteristics of a parent class.
Class - correct answerThe definition of an object, describing the type of data owned by
the object, as well as methods that act on that data.
Class - correct answerThis is the definition of an Object, describing the type of data
owned by the object, as well as methods that act on that data.
Composition - correct answerComposition, closely associated with, but different than
Inheritance, is the process of combining simpler objects into more complex objects. For
example, a Car class might include a BodyType object, an Engine object, and a
TransmissionType object, and therefore is "composed of" all of these different types of
classes.
Encapsulation - correct answerEncapsulation is one of the three central principles
(along with Inheritance and Polymorphism) of Object Oriented Programming.
Encapsulation incorporates related data items and processes into a class definition,
including instance variables, constructors, accessor and modifier (mutator) methods.
Functional Programming - correct answerFunctional programming, as opposed to
imperative or procedural programming, is a pure functional approach to problem
