The _____ is the result of adding more semantic constructs to the original entity relationship (ER) model.
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Q38: The _ depicts the arrangement of higher-level
Q39: A total completeness constraint is represented by
Q40: _ is the bottom-up process of identifying
Q41: _ completeness means that not every supertype
Q42: An entity cluster is formed by combining
Q44: The "_" characteristic of a primary key
Q45: A _ key is a real-world, generally
Q46: Specialization is based on grouping _ characteristics
Q47: Unique values can be better managed when
Q48: An entity cluster is considered "virtual" or
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