BCNF & Lossless Decomposition Prof. Sin-Min Lee Department of Computer Science Normalization Review on Keys superkey: a set of attributes which will uniquely identify…

BCNF & Lossless Decomposition Prof. Sin-Min Lee Department of Computer Science Normalization Review on Keys superkey: a set of attributes which will uniquely identify…

Lossless Decomposition& 4NF Prof. Sin-Min Lee Department of Computer Science 1. Closure Given a set of functional dependencies, F, its closure, F+ , is all FDs that are…

Midterm 3 Revision and ID3 Prof. Sin-Min Lee Armstrong’s Axioms We can find F+ by applying Armstrong’s Axioms: if   , then    (reflexivity) if  …

Midterm 3 Revision and ID3 Prof. Sin-Min Lee Armstrong’s Axioms We can find F+ by applying Armstrong’s Axioms: if   , then    (reflexivity) if  …