Showing posts with label DM. Show all posts
Showing posts with label DM. Show all posts
Friday, October 13, 2023

EVERYBODY THINK THEY KNOW FIRST NORMAL FORM, BUT NOBODY DOES

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“I have read this article in an effort to boost my academic knowledge on data modeling a bit and still have no idea what this academic autho...
Sunday, April 30, 2023

RELATIONSHIPS AND THE RDM V2 Part 3: SEMANTIC CONSTRAINTS

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Note: This is a multipart re-write of a previous series that, when completed, is intended to replace it. In Part 1 we documented the diffe...
Sunday, March 19, 2023

ON PROPERTIES IN CONCEPTUAL MODELING (rm)

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Note: Reader mail (rm) posts are exchanges with my readers that raise fundamental issues. I may improve language for clarity and amplify wi...
Saturday, February 4, 2023

CONCEPTUAL MODELING, LOGICAL DATABASE DESIGN AND PHYSICAL IMPLEMENTATION (sms)

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Note: In "Setting Matters Straight" posts I debunk online pronouncements that involve fundamentals which I first post on Linked...
Sunday, January 22, 2023

CONCEPTUAL BUSINESS RULES AND LOGICAL CONSTRAINTS (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...
Tuesday, December 13, 2022

NEW "DATA MODELS" 5.1 (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...
Sunday, October 16, 2022

NEW "DATA MODELS" 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...
Saturday, September 17, 2022

NEW "DATA MODELS" 1 (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, May 21, 2022

NO RDBMS WITHOUT RELATIONAL DOMAINS (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 "...
Friday, March 18, 2022

ENTITIES & RECORDS (sms)

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  Note: "Setting Matters Straight" is a new format: I post on LinkedIn an online Q&A involving data fundamentals to encoura...
Saturday, February 19, 2022

NO UNDERSTANDING WITHOUT FOUNDATION KNOWLEDGE PART 6: DEBUNKING AN ONLINE EXCHANGE 5 (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 ...
Sunday, December 5, 2021

HOW NOT TO EXPLAIN THE RELATIONAL MODEL (tyfk)

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Note: Each "Test Your Foundation Knowledge" post presents one or more misconceptions about data fundamentals. To test your know...
Friday, February 12, 2021

TYFK: What Is a Relational Database and Why Is It Important?

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Note: Each "Test Your Foundation Knowledge" post presents one or more misconceptions about data fundamentals. To test your know...
Friday, January 1, 2021

OBG: Database Design and Guaranteed Correctness Part 2

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Note: This is a re-write of an earlier post (which now links here), to bring it into line with the current understanding of the RDM deriv...
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...
Friday, September 4, 2020

OBG: Relationships and Relations

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Note: To demonstrate the stability afforded by a sound foundation relative to the industry's fad-driven cookbook practices, I am re-pu...
Thursday, August 20, 2020

TYFK: Relations, Tables, Domains and Normalization

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