GDR

From GDR's services page

• Public Safety Geofile Services
• GIS Data Review
• Addresspoints
• Britedata
• earthmine
• Other GIS Services
• Partner Programs

What's a Geofile?

I think it's probably a proprietary format used by Tiburon dispatch software. In this context "geofile service" would mean converting data in sundry formats into the right format for inclusion in Tiburon. Done that, just never called it a geofile. AGI used ESRI geodatabase files.

"The geofile is a database of standardized locations, including specific house numbers and streets names, commonplace names (Jackson Park), and intersections. The geofile insures that locations are within the jurisdiction, within a valid block number range, and are consistently entered and entered (which assists in later searches)" -- Dispatch Magazine, [1]