#include <db_cxx.h> int Db::get_dbname(const char **filenamep, const char **dbnamep);
         The Db::get_dbname() method returns the filename and database
         name used by the Db handle.
    
        The Db::get_dbname() 
            
            
                method either returns a non-zero error value or throws an
                exception that encapsulates a non-zero error value on
                failure, and returns 0 on success.
            
        
    
The filenamep parameter references memory into which a pointer to the current filename is copied.