How does many-to-many relationship is established in Salesforce?

You can use master-detail relationships to model many-to-many relationships between any two objects. A many-to-many relationship allows each record of one object to be linked to multiple records from another object and vice versa. For example, you create a custom object called “Bug” that relates to the standard case object such that a bug could be related to multiple causes and a case could also be related to multiple bugs. When modeling a many-to-many relationship, you use a junction object to connect the two objects you want to relate to each other.

Junction Object
A custom object with two master-detail relationships. Using a custom junction object, you can model a “many-to-many” relationship between two objects. For example, you create a custom object called “Bug” that relates to the standard case object such that a bug could be related to multiple cases and a case could also be related to multiple bugs.

• This reply was modified 6 years, 2 months ago by  Forcetalks.