Salesforce POC Task: You are working on the live project of a foreign client and the client wants that you have to create a custom field on Account object which will hold the value of other Account...

Extracted text: Salesforce POC Task: You are working on the live project of a foreign client and the client wants that you have to create a custom field on Account object which will hold the value of other Account not the same account (like ID for the Account). So, please explain the concept only that how we can create the that