MySQL 4.1 introduces spatial extensions to allow the generation,
storage, and analysis of geographic features. Currently, these
features are available for MyISAM tables only.
This chapter covers the following topics:
The basis of these spatial extensions in the OpenGIS geometry
model
The Open Geospatial Consortium publishes the
OpenGIS® Simple Features Specifications For
SQL, a document that proposes several conceptual
ways for extending an SQL RDBMS to support spatial data. This
specification is available from the OGC Web site at
http://www.opengis.org/docs/99-049.pdf.
If you have questions or concerns about the use of the spatial
extensions to MySQL, you can discuss them in the GIS forum:
http://forums.mysql.com/list.php?23.
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