[Qgis-user] How to Join Attribute Data - .MDB + ODC

[chris hermansen]

Stewart and list,

On Tue, May 12, 2026, 08:26 Stewart Galloway via QGIS-User <
qgis-user at lists.osgeo.org> wrote:

> I have files from a county real property tax agency but I need help to
> join the data to the polygons.  I'm familiar with GDBs (polygons) and MDBs
> (attributes) but not how to join one to the other.
> I'm running ver 3.2 (see below for details).
> The following is a list of files and extensions:
> Thank you.
> Stewart
>
> .ODC
>
> Malta.gdb (folder): parcel polygons
>

The line above suggests your .mdb has spatial data in a table within it.
Maybe this is an ESRI personal geodatabase?

If so, you need to

1. Find that table
2. Determine which attribute of that table contains a key value that
corresponds to other tables in the .mdb
3. Add the spatial and non spatial tables as layers

Then you can join the layers.

This article may help

https://gis.stackexchange.com/questions/129514/opening-esri-personal-geodatabase-mdb-in-qgis

>
> 4140_25-Jun-25.mdb
>
> CreateGridForSheetIndex (folder)
> Default.atbx
> Default.gdb
> scratch.gdb
> FMV_Data
> Index
> scratch.gdb
>
> QGIS version
>
> 3.20.0-Odense
>
> QGIS code revision
>
> *decaadbb31* <https://github.com/qgis/QGIS/commit/decaadbb31>
>
> Qt version
>
> 5.15.2
>
> Python version
>
> 3.8.7
>
> GDAL/OGR version
>
> 3.2.3
>
> PROJ version
>
> 6.3.2
>
> EPSG Registry database version
>
> v9.8.6 (2020-01-22)
>
> GEOS version
>
> 3.9.1-CAPI-1.14.2
>
> SQLite version
>
> 3.31.1
>
> PDAL version
>
> 2.2.0
>
> PostgreSQL client version
>
> 12.3
>
> SpatiaLite version
>
> 4.3.0a
>
> QWT version
>
> 6.1.4
>
> QScintilla2 version
>
> 2.11.4
>
> OS version
>
> macOS High Sierra (10.13)
>
>
>
>
>
> Active Python plugins
>
> localcoordinates
> qgis2web
> qad
> parcel_plugin
> qgis-maptiler-plugin
> db_manager
> MetaSearch
> processing
>
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