-If you are considering using PostreSQL, you should be aware
-of their philosophy of upgrades, which could be
-destabilizing for a production shop. Basically at every major version
-upgrade, you are required to dump your database in an ASCII format,
-do the upgrade, and then reload your database (or databases). This is
-because they frequently update the "data format" from version to
-version, and they supply no tools to automatically do the conversion.
-If you forget to do the ASCII dump, your database may become totally
-useless because none of the new tools can access it due to the format
-change, and the PostgreSQL server will not be able to start.
+If you have installed PostgreSQL from a package (.deb, .rpm, ...) or
+already installed it from source, please skip to the next section.