SteveFortune / normalisation-adventures

My notes on database normalisation and relational theory.

#Normalisation

This is a personal project documenting examples of database schemas in different normal forms - it is for my own interest.

###Objectives and Requirements

####Normalisation to 6NF

First I want to cover all the normal forms:

• 1NF schema & performance benchmarks
• 2NF schema & performance benchmarks
• 3NF schema & performance benchmarks
• BCNF schema & performance benchmarks
• 4NF schema & performance benchmarks
• 5NF schema & performance benchmarks
• 6NF schema & performance benchmarks

####Denormalised and 'Un-normalised' Comparisons

Then I want to compare benchmarks from the normal forms to benchmarks from schemas that are not normalised

• Denormalised schema & performance benchmarks by Dec 2014. Schema should be taken from 5NF into a denormalised schema.
• 'Un-normalised' schema & performance benchmarks by Dec 2014. Schema should be designed from the ground up to be normalised pragmatically but without specific normalisation constraints in place.

####Benchmarks

Benchmarks should measure:

• Speed of various queries
• DB load testing
• Reports on the amount of anomylous and redundant data there is in the database