As such, there’s not much for you to do—simply add the primary key field to the related table, as a foreign key. The only consideration is that a foreign key field must be of the same data ...

They can then gradually phase out the original table, with the shadow table taking over as the primary data store. This incremental approach to schema changes minimizes the need for extended ...

A table consists of related records ... because ‘Crime’ is short and to the point. The primary key is a field that contains data that is unique for each record. A car dealership may use ...