While SuSE has made a great effort to develop a wonderful configuration tool like Yast, in no way does SuSE restrict or limit the the user to 'have' to use it.
There are plenty of confiuration tools that you can use to fiddle with SuSE and all of them work just fine.
Suse Linux is a software company, as it the distributor of the Linux operating system. It was established in 1992 and is part of the Suse Linux Enterprise.
SUSE Linux Enterprise Server was created in 1994.
Suse was licensed to Novell.
The only real advantage of SUSE Linux over other distros IMO is that windows users could install it and not be too lost. Although some other Linux OS are nearly as easy to use as SUSE now.
SUSE Enterprise is made to run on servers(which use different platforms to organize the web page) while SUSE Linux professional is desktop Linux with special mods and cool platforms for high tech work in offices and studios.
SUSE Enterprise Linux. They also contribute heavily to OpenSUSE.
ubuntu, mandriva, and SUSE
Yes.
You cannot "uninstall" it. You can delete the partition it is installed on.
Debian, Ubuntu, RedHat, Suse, ...
Probably Apache
SUSE Enterprise Linux