Specialization is based on grouping _____ characteristics and relationships of the subtypes.
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Q41: _ completeness means that not every supertype
Q42: An entity cluster is formed by combining
Q43: The _ is the result of adding
Q44: The "_" characteristic of a primary key
Q45: A _ key is a real-world, generally
Q47: Unique values can be better managed when
Q48: An entity cluster is considered "virtual" or
Q49: The "_" characteristic of a primary key
Q50: The "_" characteristic of a primary key
Q51: If one exists, a data modeler uses
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