{HEAD ~ The present invention} relates to computer systems in general and, in particular, to {TAIL ~ systems} for creating database schemas 
relates to
{ HEAD ~ The present invention } relates to computer systems in general and , in particular , to { TAIL ~ systems } for creating database schemas
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH