<?xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom" xmlns:content="http://purl.org/rss/1.0/modules/content/"><channel><title>Database Schema on Engineering Playbook</title><link>https://learn.tanhdev.com/tags/database-schema/</link><description>Recent content in Database Schema on Engineering Playbook</description><image><title>Engineering Playbook</title><url>https://learn.tanhdev.com/vesviet.png</url><link>https://learn.tanhdev.com/vesviet.png</link></image><generator>Hugo</generator><language>vi</language><lastBuildDate>Sun, 16 Aug 2026 12:00:00 +0700</lastBuildDate><atom:link href="https://learn.tanhdev.com/tags/database-schema/index.xml" rel="self" type="application/rss+xml"/><item><title>Phần 1: Double-Entry Ledger: Schema Bất Biến &amp; Concurrency</title><link>https://learn.tanhdev.com/series/core-banking-architecture/part-1-double-entry-ledger-schema/</link><pubDate>Thu, 18 Jun 2026 11:00:00 +0700</pubDate><guid>https://learn.tanhdev.com/series/core-banking-architecture/part-1-double-entry-ledger-schema/</guid><description>Double-entry ledger schema thực tế: TigerBeetle Zig struct 128 bytes, PostgreSQL NUMERIC(18,4), trigger enforce invariant, locking strategy cho 1M TPS.</description></item></channel></rss>