المفاتيح الخارجية وعلاقات قواعد البيانات

To establish a connection between two tables, the primary key of one table (also called the parent table) is utilized as a reference point within the other table. When utilized in a different table, this primary key is referred to as a foreign key. Foreign keys are instrumental in establishing relationships between tables, ensuring data coherence. Foreign keys act as bridges between tables, ensuring data integrity and logical connections.