what is non first normal form?
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The First Normal Form (1NF) is the fundamental requirement for the relational model and states that values of attributes have to be atomic.
Simultaneously, 1NF is responsible for several drawbacks of the relational model
➔ an extended data model should not require 1NF.
Objects of the Non First Normal Form are defined as follows:
• Every atomic value (such as integer, float, string) is an object.
• If a1, a2, … , an are distinct attribute names and o1, o2, … , on are objects, then (a1:o1, a2:o2, … , an:on) is a tuple object.
• If o1, o2, … , on are objects, then {o1, o2, … , on} is a set object.
Each tuple of a NF2 relation can contain such objects