Classic geocoding layers are made up of three relational tables, two of which are
editable. To edit the geocoder layer, you need to make changes to the two component
tables, changes which will then be reflected in the main Geocoding table
(ssgeocoder.tab - USA/Canada for a particular state and xxxxX.tab -
for remaining countries).
These editable tables are called the Geocode1 table (ssgeocode1.tab -
USA/Canada for a particular state and xxxxX1.tab - for the particular
state) and the Geocode2 table (ssgeocode2.tab - USA/Canada for a particular
state and xxxxX2.tab - Rest of the World for the particular state). The
Geocode1 table contains graphic information, including street segments,
address ranges and class codes. The Geocode2 table contains street names. You can
display the Geocode1 table in a Browser or Map window, just like
any other StreetPro map. The Geocode2 table can only be displayed in a
Browser since it does not contain any graphic information.
Both the
Geocode1 table and the
Geocode2 table include a column called
MI_Refnum (
MapInfo Pro reference number) that allows you to associate
street names with street segments and address ranges. This column contains MapInfo Pro
reference numbers that are common to the three component
Classic
tables.
Note: While is one unique Mi_Refnum for each street name, different
address ranges can have the same reference number. This is because each address
range does not represent one street, but merely a segment of that street. It is
common for two non-contiguous streets in the same county to have the same name. In
some counties there may be two, three, or more main streets, each in a different
town or city. These street segments will also share a common reference number, even
though the streets may be in different towns.
Note: Neither the
Geocode1 nor Geocode2 tables can be opened with the
Autoloader application. You must open these tables separately using
File > Open.