In Part 1 we introduced in the conceptual model (CM) the metalogical designation property . It represents—in the absence of known shared de...

Note: To demonstrate the correctness and stability due to a sound theoretical foundation relative to the industry's fad-driven "co...

“What is the difference between an index and a key? How are they related?” “There seams to be some confusion between what a Primary Key ...

See: https://www.dbdebunk.com/2018/09/designation-property-and-assertion.html

There is nothing wrong with Hugo Kornelis' picture of SQL NULL in NULL: The database's black hole . In fact, I recommend the series ...

Conveying data fundamentals to practitioners, losing neither rigor, nor the audience is a difficult task. There are many experienced profes...

Expertise in a field and ability to convey it to others are distinct and the latter requires different motivation, skills and talent . Many...