BCNF Decomposition: Difference between revisions
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== | == Space-Time Tradeoff Improvements == | ||
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Revision as of 14:37, 15 February 2023
Description
BCNF Decomposition is the problem of decomposing a relation schema into Boyce-Codd normal form (BCNF).
A relation schema $R$ is in Boyce Codd Normal Form (abbr. BCNF) if for all non-trivial FDs $X \rightarrow Y$ in $F^+$, $X$ is a superkey. In extending this notion to database schemas, we must be conscious of the UR-assumption. We say that $R_i = <ATTR_i,F_i>$ is in BCNF if the schema $<ATTR_i, F^+(ATTR_i)>$ is in BCNF, and $D$ is in BCNF if each $R_i$ is.
Related Problems
Related: Decisional BCNF
Parameters
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Table of Algorithms
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Time Complexity Graph
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Space Complexity Graph
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Space-Time Tradeoff Improvements
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