Thread:Project:Support desk/How to Import Large mediawiki xml Dumps into my existing wiki?

I have Several xml dumps. For example: text-dump-1.xml - 200mb text-dump-2.xml -222mb

Each of them are 200+ MBs and i wanna import all of them on my existing mediawiki database without deleting any of its contents. I'm new to mediawiki and i wanna know how can i do that?