It is my understanding the primary key is the unique identifier in any row in a database. The foreign key is important if you want to combine two different databases. In this situation the foreign key will be the data that is present in both databases. This is how I understood the definition of primary and foreign keys I hope that my two sense help with these definitions.
It is my understanding the primary key is the unique identifier in any row in a database. The foreign key is important if you want to combine two different databases. In this situation the foreign key will be the data that is present in both databases. This is how I understood the definition of primary and foreign keys I hope that my two sense help with these definitions.
ReplyDelete