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What is a foreign key?


A) A field that uniquely identifies a given record in a table.
B) A primary key of one table that appears as an attribute in another table and acts to provide a logical relationship between the two tables.
C) A table that uniquely identifies a given record in a field.
D) A foreign key of one table that appears as an entity in another table and acts to provide a logical relationship between the two records.

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

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A one-to-many relationship occurs between two entities in which an instance of one entity can be related to only one instance of a related entity.

A) True
B) False

Correct Answer

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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 the above

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

Correct Answer

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A typical business may have hundreds of business ____________.

Correct Answer

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A foreign key is a primary key of one table that appears as an attribute in another table and acts to provide a logical relationship between the two tables.

A) True
B) False

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A primary key is a field that uniquely identifies a given record in a table.

A) True
B) False

Correct Answer

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What is a technique for documenting the entities and relationships in a database environment?


A) Entity-relationship diagram
B) Data model
C) Database
D) Relational database model

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

Correct Answer

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What is composed of rows and columns that represent an entity?


A) Field
B) Table
C) Record
D) Key

E) C) and D)
F) B) 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 the above

E) All of the above
F) C) and D)

Correct Answer

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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 the above.

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

Correct Answer

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What is a collection of related data elements?


A) Field
B) Table
C) Record
D) Key

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

Correct Answer

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Which of the following is a type of attribute?


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

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

Correct Answer

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