{TAIL ~ A relational database management system} which determines {HEAD ~ the shareable status} of an executable object in an cache 
{ TAIL ~ A relational database management system } which determines { HEAD ~ the shareable status } of an executable object in an cache
TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH