News

Database developers often disagree about whether it’s better to use naturally occurring data or meaningless values as a table’s primary key. Technically, there is no right or wrong to this ...
The column (field) in a relational database that uniquely identifies the row in the table. For example, account number is often a primary key. A "composite primary key" or "super key" is made up ...
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.
When you create a Microsoft Access table, Access will automatically create a primary key to your database table, but you can also specify the field you want as the primary key for your database table.
When building up a logical design, primary keys should be identified by the actual data points ... Generated keys can be a useful tool in creating logical database designs, but they can be easily over ...
Surrogate means a stand-in, a substitute. Surrogate keys take the place of a natural key as the primary key within a database table. Ideally, surrogate keys stand in the shadows and are used in ...