accessing a data structure containing {TAIL ~ the information} for each of the columns in the table and generating icons representative of the information, wherein at least one of the icons represents a primary key having values uniquely identifying {HEAD ~ a single horizontal row} of the plurality of vertical columns in the table 
accessing a data structure containing { TAIL ~ the information } for each of the columns in the table and generating icons representative of the information , wherein at least one of the icons represents a primary key having values uniquely identifying { HEAD ~ a single horizontal row } of the plurality of vertical columns in the table
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL 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 OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH