For guidance on rendering coordinate referenced data from a database to a map, refer to the DK Join and Chart source code sample found in DK sample set 2.
If the coordinates stored in the database are not in the same coordinate system as the base map, just reproject the coordinates, on-the-fly, to the coordinate system of the base map layer. For guidance, refer to the DK Reproject source code sample found in DK sample set #3. For more on TatukGIS support for coordinate systems and reprojection between coordinate systems, refer to KB10895.