What does "declarative rules" mean?

General Questions
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Hi all~

What does “declarative rules” mean?

This word used in “The Cascades Framework for Query Optimization”.

The main contributions of the EXODUS work were the optimizer generator
architecture based on code generation from declarative rules, …

It looks like a common word in the field of databases.

Thank you.

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Hi @achimbab, I’ve been working with MySQL and other databases for 15+ years. I’ve never heard of that term. Quick google search brings up this: Declarative processing — Concepts and terms

Good luck!

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Thank you for the reply.

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