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Database - Object-Oriented Data Modeling

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Exercise

"Actions speak louder than words."
- (Proverb)
1. 

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
2. 

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.
3. 

Multiplicity is the same as what concept for an ERD?
A. RelationshipB. Attribute
C. EntityD. Cardinality
4. 

Composition is a stronger form of which of the following?
A. Aggregation
B. Encapsulation
C. Inheritance
D. All of the above.
5. 

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

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