Identity just auto increments the value in that column (like autonumber in Access). A primary key uniquely identifies a specific row. Obviously you can have only one primary key per table (you can make a combination of columns the primary key - but I do not recommend this).
Primary key and identity
Inquisitve2
Identity just auto increments the value in that column (like autonumber in Access). A primary key uniquely identifies a specific row. Obviously you can have only one primary key per table (you can make a combination of columns the primary key - but I do not recommend this).