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A specialization hierarchy reflects the _ _ _ _ _ . a . grouping of common characteristics and relationships of subtypes b . 1 :
A specialization hierarchy reflects the a grouping of common characteristics and relationships of subtypes b: relationship between an entity supertype and its subtypes c bottomup process of identifying a higherlevel entity supertype from lowerlevel subtype d virtual entities used to represent multiple entities and relationships
A specialization hierarchy reflects the
a grouping of common characteristics and relationships of subtypes
b: relationship between an entity supertype and its subtypes
c bottomup process of identifying a higherlevel entity supertype from lowerlevel subtype
d virtual entities used to represent multiple entities and relationships
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