SQL NORMALIZATION (1NF, 2NF, 3NF)

SQL NORMALIZATION (1NF, 2NF, 3NF) is a SQL statement in the SELECT Queries category. Normalization is the process of organizing data to reduce redundancy. 1NF, 2NF, 3NF are the most common levels. The syntax is -- Normal forms design principles to reduce data redundancy and improve integrity.. It returns design principles. A typical example: -- 1NF (First Normal Form): -- - Each cell has a single value (no arrays/lists in one column) -- - Each row is unique -- 2NF (Second Normal Form): -- - Must be 1NF -- - All non-key columns depend on the ENTIRE primary key (not just part of it) -- 3NF (Third Normal Form): -- - Must be 2NF -- - No transitive dependencies (non-key columns don't depend on… A close relative is SELECT, which retrieves data from a table. The most fundamental SQL statement. A close relative is SELECT *, which selects all columns from a table.