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Python GUI Programming with Tkinter
book

Python GUI Programming with Tkinter

by Alan D. Moore
May 2018
Beginner to intermediate content levelBeginner to intermediate
452 pages
11h 26m
English
Packt Publishing
Content preview from Python GUI Programming with Tkinter

Normalization

The process of breaking out a flat data file into multiple tables is called normalization. Normalization is a process involving a series of levels called normal forms which progressively remove duplication and create a more precise model of the data we're storing. Although there are many normal forms, most issues encountered in common business data can be handled by conforming to the first three.

Roughly speaking, that requires the following conditions:

  • The first normal form requires that each field contains only one value, and that repeating columns must be eliminated.
  • The second normal form additionally requires that every value must be dependent on the entire primary key. In other words, if a table has primary key fields ...
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Publisher Resources

ISBN: 9781788835886Supplemental Content