New answers tagged dbf
No - there is no way to push just a dbf file to GeoServer. The easiest way to do it would be to open the file in OpenOffice or Excel and save it as CSV format. Then add the unsupported community csv-datastore to your GeoServer WEB-INF/lib folder.
You might consiider PostGIS FDW (Foreign Data Wrapper) - it will connect to remote files such as Shapefiles or CSV, and they will appear and be queryable just like 'normal' PostGres tables. I think you'd need to use the GDAL/OGR FDW library - it supports shapefile connections. But don't take my word for it: http://postgis.net/2014/12/19/postgis_fdw/
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