Friday, September 22, 2017
This Week
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1. Database Truth of the Week “If the data sub-language ... has the power of second order predicate logic (SOPL), expressions are poss...
2 comments:
Sunday, September 17, 2017
Database Management: No Progress Without Data Fundamentals
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I have recently -- yet again -- been accused in a LinkedIn exchange of "gibberish without any evidence" and of claiming that ...
Sunday, September 10, 2017
This Week
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1. Database Truth of the Week “A network is a directed acyclic graph (the "direction" of the transitive relationship) and, t...
Friday, September 1, 2017
Don't Confuse/Conflate Database Consistency with Truth
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Disregard for foundation knowledge and failure to learn from past mistakes by even data professionals deemed experts inhibit progress in d...
Sunday, August 27, 2017
Object Orientation, Relational Database Design, Logical Validity and Semantic Correctness
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Note: This is a 8/24/17 rewrite of a 5/20/13 post to bring it in line with McGoveran's formal exposition of Codd's RDM [1] and it...
2 comments:
Sunday, August 20, 2017
This Week
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1. Database Truth of the Week “... [one] limitation imposed by set semantics is the inability to express the concept of a computer varia...
1 comment:
Sunday, August 13, 2017
Relational Fidelity, Cursors and ORDER BY
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Here's what's wrong with last database picture, namely: "In a book I am reading (QUERYING SQL SERVER 2012) the author talks a...
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