https://www.pistack.xyz/tags/data-federation/ Recent content in Data-Federation on Pi Stack Hugo en-us Tue, 02 Jun 2026 00:00:00 +0000 https://www.pistack.xyz/posts/2026-06-02-postgresql-fdw-data-federation-postgres-fdw-mysql-fdw-tds-fdw-guide/ Tue, 02 Jun 2026 00:00:00 +0000 https://www.pistack.xyz/posts/2026-06-02-postgresql-fdw-data-federation-postgres-fdw-mysql-fdw-tds-fdw-guide/ <h2 id="introduction">Introduction</h2> <p>Modern self-hosted architectures rarely rely on a single database engine. A typical deployment might use PostgreSQL for transactional data, MySQL for a legacy application, and Microsoft SQL Server for a vendor system. PostgreSQL&rsquo;s Foreign Data Wrapper (FDW) framework enables transparent cross-database queries — you can <code>JOIN</code> a local PostgreSQL table with a remote MySQL table in a single SQL statement without ETL pipelines.</p>