Describe Specialization and Generalization

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The Answer is Specialization is the top-down process of identifying lower-level,more specific entity subtypes from a higher-level entity supertype.Specialization is based on grouping the unique characteristics and relationships of the subtypes.In the aviation example,you used specialization to identify multiple entity subtypes from the original employee supertype.Generalization is the bottom-up process of identifying a higher-level,more generic entity supertype from lower-level entity subtypes.Generalization is based on grouping the common characteristics and relationships of the subtypes.For example,you might identify multiple types of musical instruments: piano,violin,and guitar.Using the generalization approach,you could identify a "string instrument" entity supertype to hold the common characteristics of the multiple subtypes.

Describe Specialization and Generalization

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