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Why the Generalized Data Model Is Not Yet Another Bad CaRMa: Analysis of Four Pitfalls and Measurements on a Live Database

The author compares their generalized data model (a quartet of id, up, t, val) with the failed CRM Vision from the book 'Dreaming in Code,' explaining why their approach does not repeat the mistakes of Bad CaRMa. The model implements a type system, a request controller, and indexes, confirmed by measurements: record collection takes 0.16 ms, and link traversal takes 0.30 ms. A concrete example is also shown: without an index, a query took 4 seconds; after adding one, it took 0.09 ms.