What Is a Primary Key

question 28

Multiple Choice

What is a primary key?

• A) A field (or group of fields) 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 among the two tables
• C) Characteristics or properties of an entity
• D) A field (or group of fields) that uniquely identifies a given attribute in a table

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Definitions:

Customer Loyalty

The tendency of consumers to continue buying from the same brand or company over time, often due to satisfaction, convenience, or perceived value.

Short-term Goals

Objectives intended to be achieved within a relatively short period of time, often less than a year.

Feedback Loop

A system in which the outputs of a process are used as inputs for the next iteration, facilitating continuous improvement.

Frequency Measure

A metric used to evaluate how often an event occurs, such as the number of times an advertisement is shown.