Hands-On MongoDB

• 1970 E.F.Codd introduces 1st Normal Form (1NF)

• 1971 E.F.Codd introduces 2nd and 3rd Normal Form (2NF, 3NF)

• 1974 Codd & Boyce define Boyce/Codd Normal Form (BCNF)

• 2002 Date, Darween, Lorentzos define 6th Normal Form (6NF)

Goals:

• Avoid anomalies when inserting, updating or deleting

• Minimize redesign when extending the schema

• Make the model informative to users

• Avoid bias towards a particular style of query