relational-algebra

Could you grade my relational algebra answers?

I have a Databases exam tomorrow and I have been running over some past papers to check whether my relational algebra knowledge is up to a decent standard or not. If it isn't I'm going to stop working on it now and focus on other possible question types (DDL, Normalization) that may also arise. If it needs just a little bit of work the...

relational algebra to SQL converter or vice versa

i would like to check if my relational algebra statements are correct, so is there a program out there that outputs relational algebra equivalent of an SQL query? ...