Hi All,

This may sound like a newbie question, I have started working on salesforce recently and a  bit stuck up on some implementations.

I am using the REST way to access salesforce - (OAuth2 to authenticate, and REST implementation to query Salesforce).

1. How do I impose a Unique Index constraint  on Email in CONTACT entity, basically I dont want to store duplicate email ids in Contact entities. How do we do it?

I have used Validation Rules to apply Mandatory Check on Email Column, but how do we impose a Unique Check.

2. Also, by default LastName in Contact entity is Mandatory. How to remove this mandatory check.

Can anyone help me regarding this?

Regards,

Naveen Kumar B.V