question about gconf

help!
what's the relationship between the following directories?
/etc/gconf/schemas
/etc/gconf/gconf.xml.defaults

i think the relationship is:
programs stores their schema files in
/etc/gconf/schemas,when the system is started gconfd reads
info from /etc/gconf/schemas and generates the corresponding
.xml files and stores them in /etc/gconf/gconf.xml.defaults.
when the user first run the program,the program searches
/etc/gconf/gconf.xml.defaults and gets the default info,if
the user does some change to the default settings the info
will be stored in $home/.gconf/.

so,what will happen when i remove some .xml files in
/etc/gconf/gconf.xml.defaults.
i thought a new .xml file could be generated,but things
seems didn't go that way.And i'm sure it's the first time i
run that program.