A primary key is a field used to uniquely identify every record in the database. Sometime primary keys are obvious, for example a car license plate could be used to uniquely identify cars.

In our example, correcting a misspelled ... stable, and compact primary key. Other arguments debunked Many database development systems apply a unique index to a primary key, which eliminates ...

An example is shown in Listing 1 ... As you can clearly see, the SQLite database engine automatically assigns unique rowid values distinct from my table's Id primary key, which isn't really the ...

This, or these, attribute(s) are the candidate key(s) for the structure. The candidate key is also known as the primary key, or if a structure ... business data that is expected to be generated. For ...