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Database - Object-Oriented Data Modeling

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Exercise : Object-Oriented Data Modeling - General Questions
1.
The fact that the same operation may apply to two or more classes is called what?
Inheritance
Polymorphism
Encapsulation
Multiple classification
Answer: Option
Explanation:
No answer description is available. Let's discuss.
2.
The object-oriented development life cycle is which of the following?
Analysis, design, and implementation steps in the given order and using multiple iterations.
Analysis, design, and implementation steps in the given order and going through the steps no more than one time.
Analysis, design, and implementation steps in any order and using multiple iterations.
Analysis, design, and implementation steps in any order and going through the steps no more than one time.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
3.
Multiplicity is the same as what concept for an ERD?
Relationship
Attribute
Entity
Cardinality
Answer: Option
Explanation:
No answer description is available. Let's discuss.
4.
Composition is a stronger form of which of the following?
Aggregation
Encapsulation
Inheritance
All of the above.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
5.
An abstract class is which of the following?
A class that has direct instances, but whose descendants may have direct instances.
A class that has no direct instances, but whose descendants may have direct instances.
A class that has direct instances, but whose descendants may not have direct instances.
A class that has no direct instances, but whose descendants may not have direct instances
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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