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Ultimate Guide to PostgreSQL Constraints
- class_heckler 9y agoFrom the article: "engineers mistook acceleration readings measured in English units of pound-seconds for a metric measure of force called newton-seconds." Yikes. Acceleration is change in velocity per unit time, and would be measured in feet/second^2 or meters/second^2. Both pound seconds and newton seconds are measures of momentum (mass times velocity). He then goes on to define a custom domain called "acceleration" but gives it units of "1 m*kg/s". Seems to know his stuff when it comes to PostgreSQL, but evidently it's been too long since he took a high school physics class.
- grzm 9y agoArticle title: "PostgreSQL Domain Integrity In Depth"