Well, they say that they did not invent it, they have just implemented it as defined in ISO/IEC 9075:2016 standard [0] It is entirely possible that ISO design

Well, they say that they did not invent it, they have just implemented it as defined in ISO/IEC 9075:2016 standard [0] It is entirely possible that ISO design is based of Goessner’s work, but unfortunately it is just history at this point. Unfortunately this is what standardization often does - the work becomes attributed to organization, and individual authors are forgotten. [0] https://modern-sql.com/blog/2017-06/whats-new-in-sql-2016 https://modern-sql.com/blog/2017-06/whats-new-in-sql-2016