The U.S. geocoding databases contain the spatial data necessary to perform address standardization and geocoding. You must install at least one of these databases.
- Centrus Enhanced Geocoding—This database consists of TIGER data provided by the U.S. Geological Survey and address data provided by the U.S. Postal Service.
- TomTom Geocoding—This database provides more up-to-date data than the Centrus Enhanced Geocoding database. It requires an additional license. The data is provided by TomTom, a third-party provider of spatial data, and postal data from the U.S. Postal Service.
- HERE Geocoding—This database provides more up-to-date data than the Centrus Enhanced Geocoding database. It requires an additional license. HERE data is provided by HERE, a third-party provider of spatial data. For more information about these databases, contact your sales representative.
- ZIP + 4 Centroid—This database provides only address standardization and ZIP + 4 centroid matching. It does not provide street-level matching.
These databases use proprietary files called GSD files. For ZIP Code centroid matching, the file us.Z9 contains all the centroid info for all states and normally has a z9 extension.
Each geocoding database has an optional Statewide Intersections Index. The Statewide Intersection Index is designed to enable fast intersection identification on a statewide basis. For example, the Statewide Intersection Index will allow the database to search for "1st and Main St, CO" and return a list of possible matches in Colorado more quickly than searching the entire geocoding database for each instance of the intersection.
- Download your Spectrum Product Database (SPD) format files from Precisely using the link provided in the Precisely communication or from data.precisely.com.
- The database is downloaded as a zip file. Unzip the database before proceeding with the installation.
- If you have previously installed the Centrus Data Product Suite, delete any copies of the .gsd, .gsl, .gsi, .gsu, .gsz, .z9, .dir, .las, .los, .apn, and .elv files.
- Copy the files you need to a local directory.
- After you install the database files, use the Database Resource tool in the Management Console to define the database as a resource. For more information, see the Administration Guide.