SRID, SRS ID: Spatial Reference System Identifiers
more ...
|
OGC WFS
more ...
|
GIS: Geographic Information System
more ...
|
OGC WMS
more ...
|
OGC SFSQL
OGC Simple Features for SQL Specification is an extension to the relational Structured Query Language standard that defines how Geographic spatial queries can be supported in relational databases. It defines such aggregate constructs as extent, collect and spatial functions such as distance, contains, overlaps.
The sequel to the original spec is
OpenGIS® Implementation Specification for Geographic information - Simple feature access - Part 2: SQL option
|