What purpose does Junction objects serve in salesforce?

Junction objects are used to create many to many relationships between objects. It is a custom object which can link one instance of a record to many children, and each child can equally be linked too. Junction Object have two master-detail relationships to two different record types.

Example: If you take the Recruiting application example, you can see that a Position can be linked to many Candidates, and a Candidate can apply for different Positions. To create this data model you need a third object "Job Application" that links the 2.

Thanks

Hi,

Junction Object is 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.

Creating the many-to-many relationship consists of:

Creating the junction object.
Creating the two master-detail relationships.
Customizing the related lists on the page layouts of the two master objects.
Customizing reports to maximize the effectiveness of the many-to-many relationship.

Thanks.

hi,

Junction objects are used to create many to many relationships between objects. It is a custom object which can link one instance of a record to many children, and each child can equally be linked too. Junction Object have two master-detail relationships to two different record types.