May Post @All Analytics
What you need to know for the purposes of this discussion is that tables that bundle multiple entity classes have certain drawbacks. Normalization is a design repair procedure that unbundles the classes -- the columns representing attributes pertaining to each class -- each into its own table. This is possible if and only if there is no data lost or made spurious in the process -- that is, when a bundling of table A is mathematically equivalent to the joins of its unbundled projection tables B and C.
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