Oriented Data Modeling Questions and Answers

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Showing 10 of 14 questions
Q1
The fact that the same operation may apply to two or more classes is called what?
  • A Inheritance
  • B Polymorphism
  • C Encapsulation
  • D Multiple classification
Answer: Option B
Q2
 The object-oriented development life cycle is which of the following?
  • A Analysis, design, and implementation steps in the given order and using multiple iterations.
  • B Analysis, design, and implementation steps in the given order and going through the steps no more than one time.
  • C Analysis, design, and implementation steps in any order and using multiple iterations.
  • D Analysis, design, and implementation steps in any order and going through the steps no more than one time.
Answer: Option A
Q3
Multiplicity is the same as what concept for an ERD?
  • A Relationship
  • B Attribute
  • C Entity
  • D Cardinality
Answer: Option D
Q4
Composition is a stronger form of which of the following?
  • A Aggregation
  • B Encapsulation
  • C Inheritance
  • D All of the above.
Answer: Option A
Q5
An abstract class is which of the following?
  • A A class that has direct instances, but whose descendants may have direct instances
  • B A class that has no direct instances, but whose descendants may have direct instances.
  • C A class that has direct instances, but whose descendants may not have direct instances.
  • D A class that has no direct instances, but whose descendants may not have direct instances
Answer: Option B
Q6
The term Complete for a UML has the same meaning as which of the following for an EER diagram?
  • A Overlapping rule
  • B Disjoint rule
  • C Total specialization rule
  • D Partial specialization rule
Answer: Option C
Q7
A UML diagram includes which of the following?
  • A Class name
  • B List of attributes
  • C List of operations
  • D All of the above.
Answer: Option D
Q8
  • A An object can have which of the following multiplicities?
  • B Zero
  • C One
  • D More than one
Answer: Option D
Q9
Which of the following statement is true concerning objects and/or classes?
  • A An object is an instance of a class.
  • B A class is an instance of an object.
  • C An object includes encapsulates only data.
  • D A class includes encapsulates only data.
Answer: Option A
Q10
The benefits of object-oriented modeling are which of the following?
  • A The ability to tackle more challenging problems
  • B Reusability of analysis, design, and programming results
  • C Improved communication between users, analysts, etc.
  • D All of the above.
Answer: Option D

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