The Requirement That No Record May Have a Null Primary

question 31

Multiple Choice

The requirement that no record may have a null primary key and that entries for primary keys be unique is called the

• A) Rule of Referential Integrity.
• B) Rule of Primary Keys.
• C) Rule of Entity Integrity.
• D) Rule of Null Values.

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Definitions:

MIS

Short for Management Information Systems, these are computerized databases of financial information organized and programmed in such a way that they produce regular reports on operations for every level of management in a company.

Data Mart

Small slices of a data warehouse grouped together and separated from the main body of data in the data warehouse so that related sets of data can be analyzed.

Enterprise

A term often used to describe large organizations, companies, or business ventures with complex structures and operations.

Declaration of Independence

A historic document declaring the thirteen American colonies' independence from British rule, adopted on July 4, 1776.