An entity cluster is considered "virtual" or "_____" in the sense that it is not actually an entity in the final ERD.
Correct Answer:
Verified
Q43: The _ is the result of adding
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
Q49: The "_" characteristic of a primary key
Q50: The "_" characteristic of a primary key
Q51: If one exists, a data modeler uses
Q52: Usually, a data modeler uses a natural
Q53: A _ is a primary key created
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