There’s a subtle, but critical, difference between the two notions business-unique key and primary key in a relational database. For example, in a “users” table, the “user_id” could be … Read More >
There’s a subtle, but critical, difference between the two notions business-unique key and primary key in a relational database. For example, in a “users” table, the “user_id” could be … Read More >