What do you want to know specifically about the two?
The MCCEE is the test given to IMG's before they can take the MCCQE (part 1, then part 2). Part 1 is a written test, and part 2 is test that assesses your skills, attitude, and knowledge of clinical medicine. It's basically just like the USMLE part1/part 2.
For people graduating from medical colleges in Canada, they can take the MCCQE directly and do not have to take the MCCEE.