4NF Decomposition: Revision history

10 April 2023

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• curprev 11:2311:23, 15 February 2023‎ Admin talk contribs‎ 2,174 bytes +2,174‎ 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..."