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Removal of Useless Variables Consider the following grammar with starting variable A: A -> Fc A -> acAbD A -> lambda B -> aFD C
Removal of Useless Variables Consider the following grammar with starting variable A: A -> Fc A -> acAbD A -> lambda B -> aFD C -> FcCAF D -> CBaFE D -> ca E -> FEcbC E -> aaa F -> EcaE G -> C G -> EEF
a) What are the non-reachable variables before removal of non-productive rules?
b) What are the non-productive variables?
c) What are the useless variables?
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Database Processing
Authors: David M. Kroenke
12th Edition International Edition
1292023422, 978-1292023427
