Cyber Security Interview Questions and Answers › Cyber Security
Primary key vs foreign key: what is the difference?
A primary key uniquely identifies each row. A foreign key points to the primary key of another table. Keys keep data correct and are asked in every database round.
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A primary key uniquely identifies each row. A foreign key points to the primary key of another table. Keys keep data correct and are asked in every database round.
Learn more in the lesson: 11.5 Keys: Primary, Foreign, Unique