??GIS???? wxh zt

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FreeGIS?? http://www.freegis.org

?????FreeGIS???????????FreeGIS??????????

MapTools?? http://www.maptools.org

???????????GIS??

OGC?? http://www.opengeospatial.org

????GIS???????ESRI,Intergraph,Mapinfo,Oracle,Sun,BEA???OGC??

MySQL??? http://www.mysql.com

MySQL?4.1????????????OGC??????????5.0

PostgreSQL http://www.postgresql.org ??http://www.pgsqldb.org

PostgreSQL??MySQL???????????????8.0???PostGIS??????PostgreSQL(7.4?????)???????

PostGIS?????????? http://postgis.refractions.net

Oracle???????? http://www.oracle.com

Oracle?8i?????????????????????????????

Oracle 8i/9i??SDO Java API????????????????????????????????????O9iAS(Oracle 9i Application Server J2EE??)????-???WebGIS?????????????????Oracle 9i????O9iAS???????????????1G??CPU?512M?????1G?????????????9i???SDO Java API??????10g?Oracle???????????? API? API?? ???? ?????
?: ??SDO?????Oracle 8.1.7?9.2.x?10g???????

Oracle 10g??????SDO?????????????????API???????Oracle Application Server ?OC4J J2EE??????????API?????????Oracle??????????????????Oracle10g ????O10gAS(?OC4J)???????????????1G??CPU?512M?????????oracle???????