1. Database Truth of the Week "If the physical model does not preserve the properties of the logical model, then it is—by definit...

Here's what's wrong with the picture of two weeks ago, namely: "Constraints are categorized as follows: Domain integrity Co...

"...having nothing in them of the feelings or principles of ’76 now look to a single and splendid government of an Aristocracy, founde...

See: Foreign Keys Part 1: Understanding the Fundamentals

1. Database Truth of the Week “… logic—is an analytical theory of the art of reasoning whose goal is to systematize and codify principle...

See: Physical Independence Part 1: Don't Mix Model with Implementation

Database Truth of the Week "... systems of operations on data are most effective when they are formalisms, in which semantic consi...