Your are here: Home > Posts Tagged With Key
Difference Between Key
May 1st, 2011
Primary key vs Unique key A column or a set of columns, which can be used to identify or access a row or a set of rows in a database is called a key. A unique key is a key that can uniquely identify a row in a table in the context of relational databases. A unique key is made up of a single column or a set of...