Question 1

A composition is an instance of class that is made up of more than one class.

Accepted Answer

A) True 
 B)False

Question 2

A(n)________ defines the form or protocol of an operation,but not its implementation.

Accepted Answer

A)  meta-operation 
B)  inquisitor 
C)  abstract operation 
D)  operation descriptor

Question 3

What is the difference between an abstract class and a concrete class?

Accepted Answer

The answer of What is the difference between an abstract...

Question 4

An abstract operation describes the implementation of an operation.

Accepted Answer

A) True 
 B)False

Question 5

When an object is an instance of more than one class,this is known as ________.

Accepted Answer

The answer of When an object is an instance of...

Question 6

When an operation may apply to two or more classes in different ways,this is known as ________.

Accepted Answer

The answer of When an operation may apply to two...

Question 7

A diagram that shows the static structure of an object-oriented model is called a(n):

Accepted Answer

A)  structure diagram. 
B)  class diagram. 
C)  entity diagram. 
D)  none of the above.

Question 8

A ________ is the implementation of an operation.

Accepted Answer

A)  meta-operation 
B)  method 
C)  query 
D)  constructor

Question 9

An aggregation expresses a part-of relationship between a component object and an aggregate object.

Accepted Answer

A) True 
 B)False

Question 10

If a subclass of a company inherits an operation to compute a tax but extends the inherited behavior by adding a foreign surcharge,this is an example of overriding for extension.

Accepted Answer

A) True 
 B)False

Question 11

All of the following are benefits of object-oriented modeling EXCEPT:

Accepted Answer

A)  the ability to tackle more challenging problem domains. 
B)  increased consistency among analysis, design, and programming activities. 
C)  decreased communication among the users, analysts, designers, and programmers. 
D)  reusability of analysis, design, and programming results.

Question 12

A derived attribute,association,or role is one that can be computed or derived from other attributes,associations,or roles.

Accepted Answer

A) True 
 B)False

Question 13

Polymorphism occurs when the same operation may apply to two or more classes in different ways.

Accepted Answer

A) True 
 B)False

Question 14

A(n)________ operation creates a new instance of a class.

Accepted Answer

The answer of A(n)________ operation creates a new instance of...

Question 15

A state represents how an object acts.

Accepted Answer

A) True 
 B)False

Question 16

A graph of instances that are compatible within a class diagram is called a(n):

Accepted Answer

A)  object group. 
B)  method chart. 
C)  object diagram. 
D)  ERD.

Question 17

The implementation of a operation is called a(n)________.

Accepted Answer

The answer of The implementation of a operation is called...

Question 18

What is encapsulation?

Accepted Answer

The answer of What is encapsulation?...

Question 19

An operation that applies to a class rather than an object instance is a(n):

Accepted Answer

A)  constructor operation. 
B)  query operation. 
C)  class-scope operation. 
D)  update operation.

Question 20

A class that has no direct instances,but whose descendants may have direct instances is called a(n)________.

Accepted Answer

The answer of A class that has no direct instances,but...

Exam 13: Object-Oriented Data Modeling

A composition is an instance of class that is made up of more than one class.

A(n) ________ defines the form or protocol of an operation,but not its implementation.

What is the difference between an abstract class and a concrete class?

An abstract operation describes the implementation of an operation.

When an object is an instance of more than one class,this is known as ________.

When an operation may apply to two or more classes in different ways,this is known as ________.

A diagram that shows the static structure of an object-oriented model is called a(n) :

A ________ is the implementation of an operation.

An aggregation expresses a part-of relationship between a component object and an aggregate object.

If a subclass of a company inherits an operation to compute a tax but extends the inherited behavior by adding a foreign surcharge,this is an example of overriding for extension.

All of the following are benefits of object-oriented modeling EXCEPT:

A derived attribute,association,or role is one that can be computed or derived from other attributes,associations,or roles.

Polymorphism occurs when the same operation may apply to two or more classes in different ways.

A(n)________ operation creates a new instance of a class.

A state represents how an object acts.

A graph of instances that are compatible within a class diagram is called a(n) :

The implementation of a operation is called a(n)________.

What is encapsulation?

An operation that applies to a class rather than an object instance is a(n) :

A class that has no direct instances,but whose descendants may have direct instances is called a(n)________.