What is a relationship? a one-to-many relationship

In the database, a relationship is the situation where one foreign key table are basically get references from the other primary key table.

The relationship basically allow relational database to splitting and storing the data into different tables.

One to many relationship is one of the type of the relationship. The one to many relationship is basically define as when the record in the table are associate with the one and more records in the another table.

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