Add upgrade instructions

git-svn-id: http://svn.osgeo.org/postgis/trunk@9483 b70326c6-7e19-0410-871a-916f4a2858ee

diff --git a/topology/README b/topology/README
index c2816823fa0e23106d27c1d7cebc61ca3c9108fb..81bcc454661fd82b9a1e87a350219b97bcbfad0f 100644 (file)
--- a/topology/README
+++ b/topology/README
@@ -11,7 +11,7 @@ You need xfig (http://epb.lbl.gov/xfig/).
 All routines, types and other management objects are stored in the
 "topology" SCHEMA.
 
-Comments welcome --strk(2011-10-04);
+Comments welcome --strk(2012-03-13);
 
 =Requirements
 
@@ -43,9 +43,14 @@ To enable topology support:
        
 To uninstall:
 
-       psql -c 'drop schema topology cascade'
+       $ psql -c 'drop schema topology cascade'
 
-Upgrading currently requires uninstall.
+To upgrade between minor releases:
+
+       $ psql -f topology_upgrade_<version>_minor.sql <your_postgis_enabled_db>
+
+Major releases upgrades should follow the "HARD UPGRADE" procedure
+described in main postgis manual.
 
 =Usage