# PostgreSQL

PostgreSQL is an open-source relationship database system.

You can house the source and destination databases on the same PostgreSQL instance or on different instances.

You can also use the PostgreSQL data connector to connect to an Amazon Aurora database.

<table data-view="cards"><thead><tr><th></th><th></th><th></th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td><strong>System requirements</strong></td><td>Supported versions of PostgreSQL for Structural.</td><td></td><td><a href="postgres/postgresql-system-requirements">postgresql-system-requirements</a></td></tr><tr><td><strong>Required PostgreSQL configuration</strong></td><td>Set up the required database accounts.</td><td></td><td><a href="postgres/postgresql-before-create-workspace">postgresql-before-create-workspace</a></td></tr><tr><td><strong>Configure workspace data connections</strong></td><td>Data connections settings for PostgreSQL workspaces.</td><td></td><td><a href="postgres/postgresql-workspace-data-connections">postgresql-workspace-data-connections</a></td></tr></tbody></table>