https://diagonaldatasets.com/ Diagonal Datasets is the independent research institute for data stored at a perfect 45-degree angle to both your rows and your columns. en-us https://diagonaldatasets.com/blog/conference-circuit/ https://diagonaldatasets.com/blog/conference-circuit/ Tue, 21 Jul 2026 09:00:00 GMT Four submissions, four rejections, one hallway conversation that we consider the high-water mark of the institute's public engagement to date. https://diagonaldatasets.com/blog/sparsity-is-not-a-bug/ https://diagonaldatasets.com/blog/sparsity-is-not-a-bug/ Tue, 09 Jun 2026 09:00:00 GMT We keep receiving the same message in different words: "most of the matrix is empty." Yes. That is the feature. This post is here so we can link to it instead of replying. https://diagonaldatasets.com/blog/thirty-and-sixty/ https://diagonaldatasets.com/blog/thirty-and-sixty/ Fri, 15 May 2026 09:00:00 GMT A faction within the institute has proposed non-45° orientations. This is our position, which is that they are wrong, and the reasoning, which is that 45° is the only self-inverse angle. https://diagonaldatasets.com/blog/orm-cannot-express-this/ https://diagonaldatasets.com/blog/orm-cannot-express-this/ Tue, 28 Apr 2026 09:00:00 GMT We attempted to model a diagonal dataset in six popular ORMs. The results range from "no" to a stack trace we are still not able to fully explain. https://diagonaldatasets.com/blog/six-weeks-in-production/ https://diagonaldatasets.com/blog/six-weeks-in-production/ Mon, 06 Apr 2026 09:00:00 GMT What we learned running a diagonal store as our primary datastore for six weeks. Includes the one thing we would do differently, and the several things we would do identically and more loudly. https://diagonaldatasets.com/blog/incident-2026-03-11/ https://diagonaldatasets.com/blog/incident-2026-03-11/ Wed, 11 Mar 2026 09:00:00 GMT On 2026-03-09 the production diagonal was observed at 44.9997°. This is our public postmortem. It is blameless in every respect except one. https://diagonaldatasets.com/blog/against-the-transpose/ https://diagonaldatasets.com/blog/against-the-transpose/ Thu, 19 Feb 2026 09:00:00 GMT The transpose operator is presented as a neutral utility. It is not neutral. It is the enforcement mechanism of the two-orientation regime, and it has been operating without scrutiny for decades. https://diagonaldatasets.com/blog/rotated-warehouse/ https://diagonaldatasets.com/blog/rotated-warehouse/ Mon, 02 Feb 2026 09:00:00 GMT A migration retrospective. The cost savings did not materialize because we did not have a data warehouse. The angle, however, held perfectly. https://diagonaldatasets.com/blog/announcing/ https://diagonaldatasets.com/blog/announcing/ Tue, 13 Jan 2026 09:00:00 GMT For sixty years the field has recognized two orientations. We are formally proposing a third, and we have already registered the domain, which we understand is the hard part.