[Database Normalisation] (https://en.wikipedia.org/wiki/Database_normalization)
[Database Models] (https://en.wikipedia.org/wiki/Database_model)
[Relational Model] (https://en.wikipedia.org/wiki/Relational_model)
[Codd's 12 Rules] (https://en.wikipedia.org/wiki/Codd%27s_12_rules)
[HAVING a blunderful time] (http://www.dcs.warwick.ac.uk/~hugh/TTM/HAVING-A-Blunderful-Time.html)
[Django Model Fields] (https://docs.djangoproject.com/en/1.8/ref/models/fields/)