Which option characterizes an “Is-a-Relationship” ?
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Answer: B. Inheritance
Explanation
Inheritance is the mechanism that defines an is-a relationship between a subclass and its superclass. Object-oriented modeling uses inheritance to state that a specialized class is a type of general class. Is-a relationships establish clear taxonomic hierarchies across object-oriented class definitions. Object-oriented analysis distinguishes between is-a inheritance and has-a aggregation relationships. Subclasses inherit properties, confirming that every subclass instance is an instance of the superclass. Class diagrams use directed arrows to denote is-a inheritance relationships between entities.
A sports car is a vehicle represents a classic is-a relationship modeled using class inheritance. Software libraries implement animal hierarchies where a dog is an animal via inheritance. Object-oriented domain modeling relies on accurate is-a relationships to structure business entities. Aggregation represents a has-a relationship rather than an is-a taxonomic classification. Dependency indicates a uses relationship where one class relies on another temporarily. Stating all of the mentioned is incorrect because aggregation and dependency are not is-a relationships.
- Subject
- Computer Science
- Category
- Software Engineering
- Topic
- —
- Difficulty
- medium
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