Showing posts with label SST. Show all posts
Showing posts with label SST. Show all posts
Thursday, August 17, 2023

ENTITIES, PROPERTIES AND CODD'S SLEIGHT OF HAND

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Note: This a revision of an earlier post RDM is an application to database management of mathematical relation theory (MRT) consistent wit...
Monday, June 19, 2023

PREDICATE LOGIC, SEMANTICS AND RDM (sms)

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Note: In "Setting Matters Straight" posts I debunk online pronouncements that involve fundamentals which I first post on Linked...
Monday, January 2, 2023

 NEW "DATA MODELS" 5.2 (t&n)

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Note: "Then & Now" (T&N) is a new version of what used to be the "Oldies but Goodies" (OBG) series. To demons...
Thursday, November 10, 2022

NEW "DATA MODELS" 4 (t&n)

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Note: "Then & Now" (T&N) is a new version of what used to be the "Oldies but Goodies" (OBG) series. To demonstr...
Saturday, October 29, 2022

NEW "DATA MODELS" 3 (t&n)

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Note: "Then & Now" (T&N) is a new version of what used to be the "Oldies but Goodies" (OBG) series. To demons...
Saturday, October 8, 2022

NOBODY UNDERSTANDS NORMALIZATION 1 (sms)

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Note: In "Setting Matters Straight" posts I debunk online pronouncements that involve fundamentals which I first post on Linked...
Saturday, June 11, 2022

ORDER & RELATIONAL DATABASES (sms)

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Note: In "Setting Matters Straight" I post on LinkedIn online Q&As that involve fundamentals under the header "What...
Monday, April 25, 2022

RELATIONAL DATABASES & SET THEORY (sms)

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Note: "Setting Matters Straight" is a new format: I post on LinkedIn an online Q&A involving data fundamentals that I subse...
Saturday, January 8, 2022

NO UNDERSTANDING WITHOUT FOUNDATION KNOWLEDGE PART 2: DEBUNKING AN ONLINE EXCHANGE 1 (obg)

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Note: To demonstrate the soundness and stability conferred by a sound theoretical foundation (relative to the industry's fad-driven ...
Friday, December 17, 2021

NO UNDERSTANDING WITHOUT FOUNDATION KNOWLEDGE PART 2: DEBUNKING A BOOK REVIEW (obg)

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Note: To demonstrate the correctness and stability offered by a sound theoretical foundation (relative to the industry's fad-driven ...
Saturday, December 11, 2021

NOBODY UNDERSTANDS THE RELATIONAL MODEL: SEMANTICS, CLOSURE & CORRECTNESS PART 4

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with David McGoveran (Title inspired by Richard Feynman) In Parts 1 and Part 2 we provided some clarifications following a discussion on L...
Friday, November 19, 2021

THE FATE OF FADS: XML DBMS (obg)

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Note: To demonstrate the correctness and stability due to a sound theoretical foundation relative to the industry's fad-driven "co...
Thursday, November 11, 2021

Nobody Understands the Relational Model: Semantics, Relational Closure and Database Correctness Part 2

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 with David McGoveran  (Title inspired by Richard Feynman) In Part 1 we explained that all database relations are, mathematically, relation...
Wednesday, October 27, 2021

Nobody Understands the Relational Model: Semantics, Relational Closure and Database Correctness Part 1

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 with David McGoveran  (Title inspired by Richard Feynman) “As currently defined, relational algebra produces anomalies when applied to non-...
Sunday, September 19, 2021

TYFK: Calculated Attributes -- Redundancy, Full Normalization and Relational Theory

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Note: Each "Test Your Foundation Knowledge" post presents one or more misconceptions about data fundamentals. To test your knowle...
Thursday, August 5, 2021

TYFK: Facts, Properties, Relationships, Domains, Relations, Tuples

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Note: Each "Test Your Foundation Knowledge" post presents one or more misconceptions about data fundamentals. To test your know...
Friday, March 19, 2021

Data Sublanguages vs. Programming Languages

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Revised 3/20/21 I recently came across a review of Edsger Dijkstra's work, where the following comment on a book he co-authored (referr...
Saturday, January 23, 2021

"Codd was wrong" and "You're teaching the gospel" Betray Lack of Foundation Knowledge

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Note: I have documented and debunked these misconceptions so many times that I will no longer reference them -- the reader motivated to...
Saturday, October 17, 2020

Understanding Codd's 12 Rules for RDBMS

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In response to an online publication of a book appendix regurgitating Codd's 12 famous rules (some of which were, typically, incorrect[ ...
Saturday, September 26, 2020

TYFK: Nothing to Do With Relational

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Each "Test Your Foundation Knowledge" post presents one or more misconceptions about data fundamentals. To test your knowledge, fi...