What is Third normal form?
'''Third normal form''' is a property of a [[relational model]], specifically [[Table (information)|tables]] that is a criterion of [[database normalization]]. The first criterion of being third normal form is that the table be [[second normal form]]. Within a table that is in third normal form, the data in each [[Columns|column]] in each row are dependent only on columns that are part of the [[primary key]]. A primary key is one or more columns in a row that is used to identify and index that row of the table. Columns that are not related to any column in the primary key are removed. [[Category:Database modeling]]