The Feature Data Objects (FDO) API provides access to data in a data store. The latest version is v3.4.0. AutoCAD Map3D 2010 has been deployed FDO 3.4.0. - more info

OGR is a open source library. Read and write access is provided to vector data from the OGR library. The FDO Provider for OGR provides FDO with access to a variety of vector file formats supported by the OSGeo OGR library. - more info

Read and write access is provided to vector data in the formats specified at http://www.gdal.org/ogr/ogr_formats.html

There is the document which describes how to add new data sources with Third Party
and Open Source FDO Providers. - pdf