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