HOW TO IMPLEMENT ONE-TO-ONE, ONE-TO-MANY AND MANY-TO-MANY RELATIONSHIPS WHILE DESIGNING TABLES?

Amit Singh

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  1. Amit Singh

    Post:565

    Points:2825
    How to implement one-to-one, one-to-many and many-to-many relationships while designing tables?

    One-to-One relationship can be implemented as a single table and rarely as two tables with primary and foreign key relationships.
    One-to-Many relationships are implemented by splitting the data into two tables with primary key and foreign key relationships.
    Many-to-Many relationships are implemented using a junction table with the keys from both the tables forming the composite primary key of the junction table.

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