ForeignKey

An imported key in a relational database refers to a foreign key that a table receives from another table. It’s a way of saying: “This column in my table references a primary key in another table.”

• It’s a foreign key from the perspective of the child table.
• It creates a relationship between two tables—typically a many-to-one or one-to-one link.
• The imported key ensures referential integrity, meaning the value in the child table must exist in the parent table.