Tuesday, March 10, 2026
LOGICAL DESIGN: INTERPRETATION OF RDM SYMBOLIZED SETS
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As we explain in Logical Database Design (forthcoming), LDD assigns the meaning of terms in conceptual models (CMs)—properties, entities, g...
Sunday, March 1, 2026
SEMANTICS, DATABASE RELATIONS, AND TABLES
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This was said years ago: ” Table (n.) – a collection of information (data?) describing a population of entities which possess some comm...
Thursday, February 19, 2026
CONCEPTUAL MODELING FOR DATABASE DESIGN VERSION 2(2/26) PUBLISHED
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This is a major re-write. Order from a PAPERS page. Table of Contents Introduction 1 Conceptual Modeling 1.1 Ontological Commit...
Sunday, February 15, 2026
FACTS, ENTITIES, AND BUSINESS RULES
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“... In ORM there is no concept of an entity record (tuple), although relational tables can be automatically generated from an ORM model (...
Monday, February 2, 2026
DATA MUDDLING
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Chris Date once published an article at the old DBDebunk titled “Models, Models, Everywhere, Nor Any Time to Think” . If you want to get a...
Sunday, January 25, 2026
WHAT MEANING MEANS: BUSINESS RULES, PREDICATES, CONSTRAINTS, AND SEMANTIC CONSISTENCY
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“ If we step back and look at what RDBMS is, we’ll no doubt be able to conclude that, as its name suggests (i.e., Relational Database Ma...
Monday, December 22, 2025
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