Class my::Person
{
   firstName : String[0..1];
   lastName : String[0..1];
}

###Relational
Database my::mainDb
(
   Table PersonTable(firstName VARCHAR(200), lastName VARCHAR(200))
   Filter PersonFilter(PersonTable.firstName = 'Utkarsh')
)

###Mapping
Mapping my::mainMap
(
   my::Person : Relational
   {
      ~filter [my::mainDb] PersonFilter
      firstName : [my::mainDb]PersonTable.firstName,
      lastName : [my::mainDb]PersonTable.lastName
   }
)