NSCAF has multiple graphic and tabular components in a relational database
structure that is accessed using geographic information systems (GIS) and
other computer software. The main graphic components include: a community
boundary (or general service area (GSA)) file that blankets the entire province;
a road network centreline file; and a point file that locates residences,
commercial structures, recreational complexes, etc. Building footprints
are also captured for some areas of the Province. In addition to a name,
each community / GSA has a unique provincial key which forms the prefix
for numeric identifiers assigned to road segments and addressed points within
it. Tabular information is linked to graphic elements in a similar fashion.
The civic address, building use and name,
number of units (residential or commercial, etc.) and lineage and source
information are stored and linked to the point features. Each point is also
linked to the road segment which provides access to it. Road names, aliases,
posting information, and address ranges are among the items associated with
each road segment.
NSCAF contains information about 400,000 civic points and 31,000 km of roads.
Although its primary function is to support
E911 emergengy response activities, NSCAF, when used in conjunction with
the Nova Scotia Topographic Database and/or the Nova Scotia Property Records
Database, etc. becomes an even more powerful analytical tool. |
