For my database course I had to write all queries in: SQL, Relational Algebra, and Datalog. I remember that Datalog was the easiest way of writing queries if yo

For my database course I had to write all queries in: SQL, Relational Algebra, and Datalog. I remember that Datalog was the easiest way of writing queries if you understood all the tricks. However, this was on paper, never executed on real databases.