The present system applies the transformed inexact query output to the heterogeneous datastore and applies the local query element to a query result returned from {HEAD ~ the heterogeneous datastore} to provide {TAIL ~ a query result} 
to provide
The present system applies the transformed inexact query output to the heterogeneous datastore and applies the local query element to a query result returned from { HEAD ~ the heterogeneous datastore } to provide { TAIL ~ a query result }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL