You often have to access existing databases when you develop an application. One way is to use ODBC. I created a small small screencast to show you how:
It uses SQLite3 (a tiny database implemented in a shared library) as example - but you can access any ODBC compatible database (Oracle, DB2, MySQL, MSSQL, ...) if you use the appropriate database driver.
Its my first contribution to Pharocasts and I hope to do more if time permits. Thanks to Laurent for all the support and postprocessing of the recorded video.