What Is a Foreign Key

question 9

Multiple Choice

What is a foreign key?

• A) A field (or group of fields) that uniquely identifies a given entity 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) 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:

Primary Research

Collection of original data through firsthand investigation, such as surveys, interviews, or experiments.

Experiments

Systematic procedures carried out to test hypotheses, observe effects, and study relationships between variables.

Secondary Research

The process of gathering existing data from previously conducted studies and analyses, which are available in books, articles, and online resources.

Ethnographic Research

A qualitative research method focusing on the systematic study of cultures and peoples through observation and participatory involvement.