#include <db_cxx.h> Db->slice_lookup(const Dbt *key, Db **result u_int32_t flags));
         The Db::slice_lookup() method
         returns the subordinate database that contains the records for the
         provided key.
     
         The Db::slice_lookup() method
         must be called on an opened database handle.
     
         The Db::slice_lookup() 
            
            
                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 key parameter is the Dbt for the record that you want to look up.
The subordinate database containing the record identified by key is returned in the result parameter.