pgdmn articles https://www.pgdmn.com/feed.xml 2026-08-14T00:00:00Z Russell Duhonhttps://www.russellduhon.com DMN in the database https://www.pgdmn.com/articles/database-dmn/ 2026-08-14T00:00:00Z An introduction to DMN, why it matters for software developers, and the natural fit between DMN and the database. Loan eligibility, or, only define complex rules once https://www.pgdmn.com/articles/loan-eligibility/ 2026-07-13T00:00:00Z Eligibility rules that read opaquely and break quietly in application code, written once as a DMN decision table and evaluated across a table of applicants. Change pricing policies on the fly https://www.pgdmn.com/articles/order-pricing/ 2026-07-12T00:00:00Z Store each pricing policy as a dated row, and let one query price every order under the version in effect—starting a promotion is an INSERT, not a deploy. Clarity in support ticket routing rules https://www.pgdmn.com/articles/ticket-routing/ 2026-07-11T00:00:00Z Routing rules as a decision table behind a view, with a table generated from the same model for the wiki—so the docs never drift from the rules that run. Standardize and clarify regulatory requirements https://www.pgdmn.com/articles/compliance/ 2026-07-10T00:00:00Z Data-handling rules as a decision table, evaluated per row: what must be encrypted, what may not leave the EU—answered by a query, not a policy document.