Foreign Key in DBMS | Foreign Key vs Primary Key || Full Concept with examples in Hindi

Foreign Key in DBMS | Foreign Key vs Primary Key || Full Concept with examples in Hindi
Foreign Key:- A foreign key is a column (or a set of columns) in one table that refers to the primary key of another table. The foreign key acts as a cross-reference between tables, link together
Primary Key:- Primary Key: A primary key is a unique identifier for each row in a table. It cannot be null and must be unique within the table.
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