Sunday, June 19, 2016
This Week
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1. What's wrong with this picture? This week's picture is the one of the state of knowledge about keys that Martijn Evers painted...
Sunday, June 12, 2016
Levels of Representation: Conceptual Modeling, Logical Design and Physical Implementation
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From last week: What's wrong with this picture? (Kinds of Data Models, LinkedIn.com) David Hay: "Part of the ... confusion as to...
Sunday, June 5, 2016
This Week
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1. What's wrong with this picture? David Hay: Part of the ... confusion as to what exactly was meant by “data modeling”--conceptual,...
Sunday, May 29, 2016
Re-write
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See: Understanding Relations Part 1: Tables? So What?
Wednesday, May 25, 2016
Why Data Scientists Must Understand Normalization
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My May post @All Analytics: We are constantly told how data scientists must be “jacks of many skills”, but one of the most important i...
Sunday, May 22, 2016
This Week (& a Change in Format)
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I am changing the format of the posts on DBDebunk. "This Week" posts every other week will continue to be followed by posts on dat...
Sunday, May 15, 2016
Weak Entities, Referential Constraints and the Conceptual-Logical Conflation
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Note: This is a rewrite of a 09/07/14 post. A LinkedIn exchange initiated by the question What is a weak entity? diversified into vari...
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