You have added a PostGIS layer into QGIS using the built-in Add PostGIS Table GUI. This was achieved by creating a new connection and entering your database parameters.
Any number of database connections can be set up simultaneously. If working with multiple databases is more common for your workflows, saving all of the connections into one XML file (see the tip in the preceding section) would save time and energy when returning to these projects in QGIS.
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