A) design a generalization-specialization hierarchy for a motor vehicle sales company. The company sales the motorcycles, passenger cars, vans and buses. Justify your placement of attributes at each level of hierarchy. Explain why they should not to be placed at a higher or lower level. (4)
Answers
Answer: Create a hierarchy of generalisations and specialisations for a car sales organisation. The business sells buses, vans, passenger cars, and motorcycles. Give reasons for where you placed the attributes in the hierarchy. Justify your decision not to assign them to a higher or lower level. (4) A generalisation hierarchy, also known as an is-a hierarchy, links a superclass and one or more subclasses to show how the superclass has been specialized. Because a subclass may in turn be a superclass of other subclasses, the hierarchy may have multiple levels.
Explanation:
Step :1 Numerous entities are combined into one generalized entity through the process of generalization. The process of specialisation entails the division of a single entity into numerous sub-entities. Size: By combining elements, generalization minimises the data's schema. The schema is expanded via specialisation by increasing the components.
Step :2 A generalization is when you say something about all or most of the people or objects at once. For instance, every bird has wings. - Cereal is a common breakfast food for kids.In psychology, generalisation is the propensity to react uniformly to various but related stimuli. For instance, a dog that has been trained to salivate in reaction to a tone of a certain pitch and volume will likewise salivate often in response to tones of higher and lower pitch.
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