[Suraj]

Hi Vikas,

In order to login as a community user first you need to create a community in your Salesforce org.After creating a community you need to give permission to users in your org who can login in community. To allow an external user to access your community, add them to an account as a contact record and then enable the contact record as a customer user or partner user, depending on your business relationship.

 

Thanks,

Suraj Bisht

[Suraj]

Hi Rahul,

Salesforce Junction Objects are custom objects used to create many to many relationship between any two objects. A many to many relationship allow each record of one object to link with each record of another object and vice versa.For example,you may have 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.

A Junction object is a custom object with 2 master detail relationships.

Creating Many to Many relationship consists of :

Creating the Junction Object
Creating the two master detail relationship

Thanks,

Suraj Bisht