title: Notmapped properties in POCO or Self Tracking Entities
body: <p>Is it possible have custom properties in POCO or STE. as a rule, STE or POCO property names should match table column names. so is it achievable in STE?</p>
  
  <p>ie. Table has 3 columns (Id, Name, DateOfBirth). Whether entity can have Age (custom property without db mapping)?</p>
  
  <p>regards,
  Anand</p>