3.4. The Distributed Transaction Coordinator
To represent DTC, I use a cartoon figure of a wise woman in a Zen meditative state who sees everything happening around her and is not distracted by the flotsam of life. You need this kind of focus to implement DTC's demanding algorithms. Meet DTC in Figure 3.3.
Figure 3.3. Introducing DTC, the Distributed Transaction Coordinator
DTC manages the tightly coupled multiple-resource transaction by creating a higher-level supertransaction that oversees transactions at the resource (database) level.
From a software system perspective, tightly coupled multiple-resource transactions using DTC look identical ...