private IDBTable LineBusinessHour(IDBSchema sch)
        {
            var rev = new DBRevision(new DateTime(2020, 4, 14), 2, eDBRevisionType.Create);

            var ret = DBMacros.AddDBTableID("LineBusinessHour", sch, new DBRevision(rev));

            DBMacros.AddForeignKeyFieldID("LineID", false, ret, sch.Name + ".Line",
                                          new DBRevision(rev));

            DBMacros.AddForeignKeyFieldID("BusinessDayID", false, ret, sch.Name + ".BusinessDay",
                                          new DBRevision(rev));

            ret.AddField("StartTime", DBMacros.DBFieldIntegerDescriptor(false),
                         new DBRevision(rev));

            ret.AddField("EndTime", DBMacros.DBFieldIntegerDescriptor(false),
                         new DBRevision(rev));

            return(ret);
        }