liberal or not you can express your expectation in a well defined manner. As to "then what" its up to you, i'd go with some 4XX ( or other technology specific e

liberal or not you can express your expectation in a well defined manner. As to "then what" its up to you, i'd go with some 4XX ( or other technology specific error) that implies that no processing has occured. All arguments for and against schemas in databases translate well to this case.