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GeneralRe: Card shuffle program code help needed Pin
Brian_TheLion9-Jun-20 20:56
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QuestionBest way to store methods in a database? Pin
arnold_w5-Jun-20 23:42
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QuestionRe: Best way to store methods in a database? Pin
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arnold_w6-Jun-20 0:56
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GeneralRe: Best way to store methods in a database? Pin
Richard MacCutchan6-Jun-20 1:10
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AnswerRe: Best way to store methods in a database? Pin
Member 79891226-Jun-20 6:22
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About 40 years ago, when I was still a student, we had this database system where you could define triggers in the database for doing all sorts of integrity checks etc. on the database, independently of the application. This was a realational database, but using an extended variant of Pascal to address the tables: What would be WHERE criteria in SQL was indexing expressions in the database tables, etc. You didn't adrress the database as an external entity, but rather declared you application as an entity in the database: The databse tables were defined in a layer conceptually "outside" the program entity, encompassing it. Tables were defined using the same syntax as Pascal arrays, but being "outside" the program, they had a lifetime scope beyond the execution of the program; they looked just like other arrays, but were persistent, and had extended indexing facilities and other table operations.

This compiler was based on the classical P4 Pascal compiler. So when you compiled a database routine, the P4 code was stored in the database, available to any program using this database as an outer shell. The routines were instruction set and OS independent; the database (with its embedded routines) could be accessed from any OS or machine architecture that offered a P4 interpreter.

I believe that this project started around 1975-76, so it was quite early for this kind of architecture.
GeneralRe: Best way to store methods in a database? Pin
Richard MacCutchan6-Jun-20 6:26
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Eddy Vluggen6-Jun-20 0:48
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QuestionMulti programming language Pin
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