title: Validating boolean properties
body: <p>I feel abit embarrassed asking about this. Cant seem to find it described anywhere else though...</p>
  
  <p>Say, we have a webservice method, StoreNewItem(Item item), that takes in a datacontract with all the properties for the item.
  We will insert this new item in a database.
  Some of the properties are mandatory, and some of these are boolean.</p>
  
  <p>Should we validate the incomming data, i.e. verify that the mandatory fields actually have valid data, or should this be the responsibility of the client calling the webservice?</p>
  
  <p>If yes, how to handle the boolean properties? The client may well ignore them, and they will be stored as false in db, as we have no way of knowing if they where set to false or just ignored/forgotten by the client.</p>
  
  <p>Is it a valid option to use an enum with True, False and Empty instead of bool as a type for these mandatory properties?
  Or is this simply not our problem?</p>
  
  <p>All thoughts are welcome!</p>