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    Posts

    Tag: integrity

    14.03.2023 | Laurenz Albe

    Breaking your PostgreSQL database with bad CHECK constraints

    © Laurenz Albe 2023 I am on a spree! After writing about breaking your database and transaction ID wraparound, here I am writing about damage caused by CHECK constraints! Trust me, I don’t want to destroy PostgreSQL databases. It’s just that this Twitter message was brought to my attention and triggered memories of other reports […]

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    27.10.2020 | Hans-Jürgen Schönig

    PostgreSQL: Foreign keys and insertion order in SQL

    In SQL, the concept of foreign keys is an important one that can be found in all professional databases used in the industry. The core idea is to prevent your PostgreSQL database from storing inconsistent data by enforcing constraints ensuring the correctness of your tables (at least as far as relations between objects are concerned). […]

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