I want unique value for telephone element
问题 I am learning xml and schema.I want a schema where Telephone element value have to be unique. I try with unique but can't understand how it's work. Sorry for this silly question but i am learning. xml <?xml version="1.0" encoding="utf-8" ?> <Company xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"> <Employee> <Name>ABC</Name> <Telephone>9998887770</Telephone> </Employee> <Employee> <Name>DEF</Name> <Telephone>9998887770</Telephone> </Employee> <Employee> <Name>GHI</Name> <Telephone