ITRT_StrawAlignDbSvc Node1 ITRT_StrawAlignDbSvc + trtcondid() + setDx() + writeTextFile() + readTextFile() + streamOutObjects() + registerObjects() + getDxContainer() + IOVCallBack() + getDx1() + getDx2() + getDxErr() + setDx() + interfaceID() Node2 IService Node2->Node1