[Mediawiki-l] How do I partially lock the database?

[Garrett Baumgartner]

How do I protect the database in Mediawiki such that people in the Sysop 
group can edit the database normally, but regular users can only edit Talk 
pages?  Would this involve somehow protecting specific namespaces (e.g., 
everything except Talk)?  Is it even possible?  I don't want the database to 
be editable by just anyone off the internet but I do want it to be editable 
to anyone I trust enough to give sysopness.

Also, what precisely does the dev-level "lock database" do?  Can the person 
with developer permissions still edit the database?  Are the talk pages 
unaffected?  I can't check because it didn't ask me to set up a dev account 
when I installed it (it did give me a bureaucrat / sysop though).  I am 
looking at the table in PhpMyAdmin and the rows my default account has are:

1 bureaucrat
1 sysop

I tried adding another row for user 1 with the user group "developer" but 
that didn't work.  I renamed it to "dev" and that didn't work either.  What 
group is it?

Thanks.

- Garrett