Yes. ArcGIS StreetMap can support additional street data sets. ESRI envisions
that in the future, ESRI distributors and other data providers will offer
their own StreetMap data sets that can plug into and be used directly
by the ArcGIS Desktop products (ArcInfo, ArcEditor, and ArcView) through
the ArcGIS StreetMap extension. For information on additional data options,
consult your local distributor or data provider.
Yes. ArcGIS 9 Desktop adds the ability to define a composite address
locator for geocoding. With a composite address locator you can simultaneously
geocode using multiple address locators based on reference data for different
geographic areas or varying levels of detail.
You can create composite locators using the ArcGIS StreetMap locator and
your own address locator to improve the quality or range of your geocoding.
For example, a composite locator can be defined so that if the Country
field in an address is defined as USA, the address will be geocoded
by the StreetMap USA locator, but Canadian addresses will be sent to a
Canadian streets locator.
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