Electronic resource citation styles vary greatly, but as you are not a student wanting to show the teacher that you deserve brownie points for using a database as opposed to Wikipedia, I don't see any problem with putting the url and date accessed. The important thing with citations is to enable someone else to find the same information that you found, not necessarily your entire research path. This is why citations that refer to a newspaper title and year (no complete date, let alone a page number) madden me so much. Which you didn't need to know, but I felt like sharing. :)