When you create a Microsoft Access table, Access will automatically create a primary key to your database table. Still, you can also specify the field you want as the primary key for your database ...

Fields are elements in a table. They are formed from different data types, such as text or numbers. A field may be designated as a primary key, where it has a unique value for each record, is indexed, ...

When working on a multidimensional design, every fact table within scope should be handled with care. In an ideal world, each low-level fact table represents the metrics related to a business event.

Databases are used in many different settings, for different purposes. For example, libraries use databases to keep track of which books are available and which are out on loan. Schools may use ...

In the realm of Fortnite, where battles and strategies unfold, the concept of primary and foreign keys can be likened to the dynamics of a squad and their interactions with the game’s features. Just ...

Referential integrity (RI)is a method for ensuring the “correctness” of data within a DBMS. People tend to oversimplify RI, stating that it is merely the identification of relationships between ...

Every JPA entity has a primary key, but some entities have more than one value as their primary key. In this case, you need to use a composite key. This Java tip introduces you to using composite keys ...