{HEAD ~ A method} 1, wherein {TAIL ~ the database} is a relational database having a number of database fields, each having a respective type 
{ HEAD ~ A method } 1 , wherein { TAIL ~ the database } is a relational database having a number of database fields , each having a respective type
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH