Which of the following is NOT a basic element of all versions of the E-R model? Options: A . &nbspEntities B . &nbspAttributes C . &nbspRelationships D . &nbspPrimary keys

Which of the following is NOT a basic element of all versions of the E-R model?

Question

Which of the following is NOT a basic element of all versions of the E-R model?

Options:

A . Entities

B . Attributes

C . Relationships

D . Primary keys

Answer: Option D

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Question 1. Entities can be associated with one another in which of the following?....

Question 2. In a one-to-many relationship, the entity that is on the many side of the relationship is called a(n) ________ entity.....

Question 3. An ID-dependent entity is an entity whose identifier is a composite identifier where no portion of the composite identif....of the composite identifier is an identifier of another entity.

Question 4. A ternary relationship is so called because in contains two entities and one association between them.....

Question 5. All instances of an entity class have the same attributes.....

Question 6. A minimum cardinality is the minimum number of entity instances that may participate in a relationship instance.....

Question 7. An attribute describes the entity's characteristics.....

Question 8. The degree of a relationship refers to the number of entity classes in the relationship.....

Question 9. Entities use identifiers while tables use keys.....

Question 10. Composite identifiers consist of two or more attributes.....

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