In a relational database, what does a foreign key represent?

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Question: In a relational database, what does a foreign key represent?

Options:

Correct Answer: A reference to a primary key in another table

Solution:

A foreign key is a field (or collection of fields) in one table that uniquely identifies a row of another table.

In a relational database, what does a foreign key represent?

In a relational database, what does a foreign key represent?

Step 1: Understand that a relational database is a way to organize data into tables.
Step 2: Know that each table has rows and columns, where rows represent individual records and columns represent attributes of those records.
Step 3: A foreign key is a special type of column in one table.
Step 4: This foreign key links to the primary key of another table.
Step 5: The primary key is a unique identifier for each row in its own table.
Step 6: The foreign key helps to establish a relationship between the two tables.
Step 7: This means that the foreign key in one table points to a specific row in another table.

Foreign Key – A foreign key is a field (or collection of fields) in one table that uniquely identifies a row of another table, establishing a relationship between the two tables.
Relational Database – A relational database organizes data into tables that can be linked—or related—based on data common to each.