A primary key is simply a candidate key labelled as the ‘primary’ (see more in A Key to Keys), and they are enforced by the same mechanism in Sql Server – the unique index. We can query the system tables to get a quick list of these.
A primary key is simply a candidate key labelled as the ‘primary’ (see more in A Key to Keys), and they are enforced by the same mechanism in Sql Server – the unique index. We can query the system tables to get a quick list of these.
