From GeoWorld: What Exactly Is a Spatial Data Infrastructure?

Ron Lake, president of Galdos Systems Inc., writes an overview of the notion of the "Spatial Data Infrastructure."

Although the ambition and name of a spatial data infrastructure (SDI) have been around for a long time, only recently have standards and technologies actually enabled a true SDI to be built. As a result, it’s important to revisit existing notions of SDI and understand where this technology may be headed in the near future.