StackRating

An Elo-based rating system for Stack Overflow
Home   |   About   |   Stats and Analysis   |   Get a Badge
Answers and rating deltas for

why superkey is required when we can identify a tuple uniquely through primary key?

Author Votes Δ
Branko Dimitrijevic 2 +0.43
nvogel 2 +0.67
Walter Mitty 2 +0.86
rjp 1 -3.02
Damir Sudarevic 1 -1.58
Last visited: Sep 14, 2014, 5:07:29 AM