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

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

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

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

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

“Data modelling, star schema, snow flakes, data vault. Implementing virtual data warehouses (many stage to modify relationships). Normalis...

“... I needed to know what the constituent parts of data models really are. Across the board, all platforms, all models etc. Is there anyt...

“The term data model is used in two distinct but closely related senses. Sometimes it refers to an abstract formalization of the objects a...

8/18/18: I have re-written this post for a better explanation. If you read it prior to the revision, you should re-read it.   “I learned...

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...

(Erwin Smout is co-author of this post.) Revised 8/26/18 In Implementation Data Modeling Styles Martijn Evers writes: "Business...