First Normal Form (1NF) sets the very basic rules for an organized database:
Eliminate duplicative columns from the same table.
Create separate tables for each group of related data and identify each row with a unique column (the primary key).
Recall the general requirements of 2NF:
Remove subsets of data that apply to multiple rows of a table and place them in separate tables.
Create relationships between these new tables and their predecessors through the use of foreign keys.
There are two basic requirements for a database to be in third normal form:
Already meet the requirements of both 1NF and 2NF
Remove columns that are not fully dependent upon the primary key.
Visual_C_Sharp_2008 Poster
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