the uni has no answers - how good are they! A lot of people end up working in careers that have little to do with their degree.
That said, you're looking at a course that shows how to set up and manage business systems that primarily run online, including sales, marketing, payments etc. It will have a broad business base - so you won't be restricted to ecommerce - but will be very focussed on modern technology as a means of running businesses. As to the career afterwards - everything from business management to website design.
You should have a course descriptor from the uni - read it, speak to people currently on the course and check out stats that the uni will have for employment prospects afterwards (goes for all courses). Also, more info here
http://en.wikipedia.org/wiki/Electronic_commer ce