I can have a look at this, your deadline from 15 hours @ 10:30pm 12/8 leave me very little time to complete this, are you willing to revise that deadline a few hours? Relational algebra is relatively easy, but time consuming.

Unfortunately I am back to researching relational algebra, I thought I had 2 hours and started cramming! I am afraid it is beyond me at 12 hours, I will have to study constraints and a few other things before I can complete this swiftly. I will opt out to see if we can get someone with a bit more relational algebra knowledge on this one! Thanks!