132 hints

132 hints - QBE conditional box NAME (PERSON) NAME...

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List at lowest All sailor.rating >= s.rating Need domain calculus for qbe {s: name | for all s in sailor [s.rating >= t.rating]} If no need for a, create some E a that is actor in movie(t,d,a) but you want t,d don’t need a, just make a random a Create variable x if no need for it in the query. Define variables x: rating, y: rating Can use <, > Sailor(sn1,x) ^ sailor(sn2, y) ^ x < y
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Unformatted text preview: QBE conditional box NAME (PERSON) NAME (AGE&lt;AGE (PERSON&gt;&lt; AGEAGE (AGE (PERSON)))) Slide 36 calculus algebra pdf q: AB (B=5 (R)) BC (AB (R) AC (B=5 (R))) When doing tableau minimization, if pi ac , then project E b 1 then change all of the next b vars to b1. If theres is a quantifier sigma b = 5 then do ^ b 1 = 5....
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This note was uploaded on 01/09/2012 for the course CSE 132A taught by Professor Alindeutsch during the Spring '08 term at UCSD.

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