public RisEstudioCaracteristicaCollection FetchByQuery(Query qry)
        {
            RisEstudioCaracteristicaCollection coll = new RisEstudioCaracteristicaCollection();

            coll.LoadAndCloseReader(qry.ExecuteReader());
            return(coll);
        }
        public RisEstudioCaracteristicaCollection FetchAll()
        {
            RisEstudioCaracteristicaCollection coll = new RisEstudioCaracteristicaCollection();
            Query qry = new Query(RisEstudioCaracteristica.Schema);

            coll.LoadAndCloseReader(qry.ExecuteReader());
            return(coll);
        }