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What is a foreign key?
What is a foreign key?
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Practice Questions
1 question
Q1
What is a foreign key?
A primary key in another table
A unique identifier for a table
An attribute that can be null
A key used for indexing
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A foreign key is a primary key in another table that establishes a relationship between the two tables.
Questions & Step-by-step Solutions
1 item
Q
Q: What is a foreign key?
Solution:
A foreign key is a primary key in another table that establishes a relationship between the two tables.
Steps: 4
Show Steps
Step 1: Understand that a database is made up of tables that store information.
Step 2: Each table can have a special column called a primary key that uniquely identifies each row in that table.
Step 3: A foreign key is a column in one table that links to the primary key of another table.
Step 4: This link creates a relationship between the two tables, allowing you to connect related data.
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