How can we have one to one relationship between two object in salesforce?

Hi Mohit,

You can do this by following these steps:

• Create two objects Manager and Department.
• Then create a Master-Detail relationship between the Department and manager.
• Create a rollup summary field countManager (count) in department.
• Create a validation rule in department object on countManager field. Throw an error "department can be managed by only one manager"when the countManager is greater that 1.

Hope this helps you.

Thanks