Real-time Commit Processing
Jayant R. Haritsa, Krithi Ramamritham, Ramesh Gupta · Kluwer Academic Publishers eBooks · 2005
INTRODUCTION Many real-time database applications are inherently distributed in nature [24, 28]. These include the intelligent network services database described in [5] and the mobile telecommunication system discussed in [29]. More recent applications include the multitude of directory, datafeed and electronic commerce services that have become available on the World Wide Web. An essential requirement for most distributed real-time database system (DRTDBS) applications is transaction atomicity { this is satised by implementing a transaction commit protocol. Commit protocols typically require exchange of multiple messages, in multiple phases, between the participating sites where the distributed transaction executed. In addition, several log records are generated, some of which have to be \\forced", that is, ushed to disk immediately in a synchronous manner. Due to this series of synchronous message and logging c