Which of the following statements best describes what a foreign key is? Select all that apply. Explain

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Which of the following statements best describes what a foreign key is? Select all that apply. Explain if incorrect. 

a. It is an attribute that uniquely identifies each instance of the entity. 

b. It is a primary key that consists of multiple attributes. 

c. It is the primary key of a related database table.

d. It is a single occurrence of an entity.

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Business Analytics Communicating With Numbers

ISBN: 9781260785005

1st Edition

Authors: Sanjiv Jaggia, Alison Kelly, Kevin Lertwachara, Leida Chen

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