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A (An) _______________ relationship occurs between two entities in which an instance of one entity can be related to many instances of a related entity.

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A (An) ________________ diagram is a technique for documenting the entities and relationships in a database environment.

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What has only a single value of each attribute of an entity?


A) Single-valued attribute
B) Multi-valued attribute
C) Null-valued attribute
D) All of these

E) None of the above
F) B) and C)

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A (An) ____________ attribute can be calculated using the value of another attribute.

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Which of the following statements is accurate?


A) A correct business rule for one organization may not be correct for another organization.
B) Each business rule will have entities and sometimes even attributes.
C) A typical business may have hundreds of business rules.
D) All of these.

E) A) and B)
F) All of the above

Correct Answer

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What occurs between two entities in which an instance of one entity can be related to only one instance of a related entity?


A) One-to-one relationship
B) One-to-many relationship
C) Many-to-many relationship
D) Composite entity

E) A) and B)
F) A) and D)

Correct Answer

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What has the potential to contain more than one value for an attribute?


A) Single-valued attribute
B) Multi-valued attribute
C) Null-valued attribute
D) All of these

E) B) and C)
F) A) and D)

Correct Answer

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Date of birth would be a stored attribute.

A) True
B) False

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What exists to represent the relationship between two other entities?


A) One-to-one relationship
B) One-to-many relationship
C) Many-to-many relationship
D) Composite entity

E) All of the above
F) A) and B)

Correct Answer

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What kind of attribute would be date of birth?


A) Null-valued attribute
B) Multi-valued attribute
C) Derived attribute
D) Stored attribute

E) A) and B)
F) None of the above

Correct Answer

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Which of the following is a possible business rule?


A) A customer can purchase many DVDs.
B) DVDs can be purchased by many customers.
C) A DVD title can have many copies.
D) All of these.

E) None of the above
F) A) and D)

Correct Answer

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A typical business may have hundreds of business ____________.

Correct Answer

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