Hi Bhupinder,
I think you can achieve it using Cloud development studio SDK. You can extend the Business Object and define your custom field as Transient. This will prevent storing the data in database and can be used for display content using logic. Implement required event/Custom event to retrieve and fill in this data.
Syntax:
[Transient] element <name> : <data type>;
Let me know if you have any questions.
Hope it helps
Regards,
Sathya