Is it possible to connect a libreoffice database to qgis? I developed a database for our exploration points and would like to connect it directly to QGIS instead of exporting to csv.
Libreoffice Base has the benefit of potentially becoming something like ESRI's personal geodatabase format. The main reason for NOT using PostgreSQL is that you want (or need) data stored in files rather than on servers, so it's understandable to want to use Libreoffice Base.
It should be easy to export BASE into a format easily used by QGIS: sqlite. Spatialite adds GIS features sort of like how ESRI adds GIS features to ACCESS databases within its personal geodatabase.mdb format. (or how PostGIS enables ProstreSQL database servers.
You can use QGIS DB Manager and supplement it with Spatialite GUI, a powerful sqlite frontend. sqlite is lightning fast and able to store a tremendous amount of data within a single file.
So, my answer would be to utilize your BASE data by exporting it into sqlite and connecting QGIS to it. There is no reason to use ProgreSQL unless you have multiple offices that are feeding data into a single database.