placing {HEAD ~ alphanumeric representations} of the information on the display, wherein at least one alphanumeric representation represents a number of {TAIL ~ the foreign keys} that one of the column belongs to 
placing { HEAD ~ alphanumeric representations } of the information on the display , wherein at least one alphanumeric representation represents a number of { TAIL ~ the foreign keys } that one of the column belongs to
OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH