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• 11:23, 15 February 2023 Admin talk contribs created page 4NF Decomposition (Created page with "{{DISPLAYTITLE:4NF Decomposition (4NF Decomposition)}} == Description == 4NF Decomposition is the problem of decomposing a relation schema into fourth normal form (4NF). A relation schema $R^*$ is in fourth normal form (4NF) if, whenever a nontrivial multivalued dependency $X \rightarrow \rightarrow Y$ holds for $R^*$, then so does the functiunal dependency $X \rightarrow A$ for every column name $A$ of $R^*$. Intuitively all dependencies are the result of keys. In pa...")