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6. The degree of a relationship refers to the number of entity classes in the relationship.

A. True
B. False

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7. Entities use identifiers while tables use keys.

A. True
B. False

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8. Composite identifiers consist of two or more attributes.

A. True
B. False

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9. When designing a database, first identify the entities, then determine the attributes, and finally establish the relationships.

A. True
B. False

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10. A subtype entity is a special case of another entity called a supertype entity.

A. True
B. False

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