SDI

Some of the main principles of a Spatial Data Infrastructure (SDI) are that data and metadata should not be managed centrally, but by the data originator and/or owner, and that tools and services connect via computer networks to the various sources. A GIS is often the platform for deploying an individual node within an SDI. To achieve these objectives, good coordination between all the actors is necessary and the definition of standards is very important.

Read more about Spatial Data Infrastructures: