Do I have to set up a Limited company to run a biz in the DR?

I have been offered to run a small business in the DR, is it possible to simply run it in own name or, does a foreigner (me: German national) HAVE to set up a Sociedad Limitada to do so?
Of course I am aware that an Ltd. will limit my risk and all that, but in my case that is not such a factor.

What is the exact procedure, do I have to register the business and where (tax office, chamber of commerce etc?).

Thanks for the info. I forgot to mention that the biz would include having 3-4 employees. Just found that document from Guzman abogados about the various forms of corporations here, so it looks like the EIRL is the way to go for me. Only thing I need to find out how complicated it is to close the company later on. Opening one seems very straightforward and cheap alright.
But I had recent experience (in Turkey), where opening a LTD is easy and cheap, but closing is a nightmare and 10 times more expensive. Don't want to go through that again...