title: the demarcation protocol : a technique for maintaining constraints in distributed database systems. authors: daniel barbará , hector garcia-molina. venue: vldb j.. year: 1994
title: the demarcation protocol : a technique for maintaining constraints in distributed database systems. authors: daniel barbar &#225; - mill &#225; , hector garcia-molina. venue: the vldb journal -- the international journal on very large data bases. year: 1994