Check that the client libraries for your database server are correctly installed on your machine. If so, you can, for example, use the tools supplied with the database server ( isql for Sybase, sqlplus for Oracle, and dbaccess for Informix) to test that you can connect to the server and execute simple SQL commands.
The model file should be in the Resources directory under the application's .woa directory. Taking the Movies application for example, the directory structure would look like this:
Movies.woa/
Movies (the executable file)
Resources/Movies.eomodeld (the model file)