One task that users often find unwieldy when implementing Salesforce is setting up the sObjects to represent many-to-many relationships. A junction object allows a single instance of one sObject type to be related to multiple instances of another sObject type and vice versa.
This requires the user to create a new instance of the junction object and populate master-detail fields to associate two sObjects with each other, resulting in a large number of clicks and page transitions.
In this recipe, we will create a custom object – account group – that acts as a container for multiple accounts. We will then create a page that allows a number of accounts to be associated with a single custom sObject. We will use junction objects for the relationship to allow a single account to be related to multiple account groups, and a single account group to be associated with multiple accounts. A custom Visualforce component will manage the action of presenting the available accounts...
