Occasionally one sees an entity-relationship diagram (ERD) having an unusual characteristic. The unusual element is an entity (or more than one) that seems to have a relationship with every other ...

In a relational database approach, regardless of whether one is considering persisted data or transitory query results, almost everything is viewed as a logical table. Associations between these ...

Database normalization is the cornerstone of database theory. Once a database is normalized, relationships between the data in multiple tables must be established. A hefty part of designing a ...