No single data in Salesforce is virtually alone. Vast amounts of data in your Salesforce platform are often interrelated business concepts, and can be linked together by several connected objects. Relationships are then built among these connected objects in order for them to perform their best job in keeping data available and updated for all your business needs.
You can create three main relationship types in Salesforce. Among these relationships is the Many-to-Many Relationship. To facilitate the creation of such a relationship, junction objects are needed to link two interrelated objects together. (more…)