The user is not given {HEAD ~ an effective method} for drawing relationships between the columns and {TAIL ~ keys} in the table without opening additional windows or panels 
The user is not given { HEAD ~ an effective method } for drawing relationships between the columns and { TAIL ~ keys } in the table without opening additional windows or panels
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH