Computer Science 455

Exercise #7

Due:  This exercise is for your review only, and is not to be handed in.  I will try to get an exercise key published (on the course home page) some time before the final. This material will not appear on the third hour exam, but may appear on the final exam.

Please work (in the full relational algebra ) problems 15, 21, 31, 40, 42 on pages 208 - 209 of Date. Use the same protocol used for the first (EasyAlg) exercise.