Message-Task Scheduling in Ojbect-Oriented Heterogeneous Guru Distributed DBMS

Abstract

Distributed Message-Task System (DMTS) is designed and implemented on GURU Distributed Database Management System (GURU DDBMS). It incorporates the advantages of Message Based Communication System (MBCS) and Distributed Shared Memory System (DSMS). The message carrying ordinary data is scheduled by the scheduler for the translation in the local DBMS environment, and later passed to the supervisor of the object as a simple message. The other kind of messages having the control instructions are first scheduled for the translation of the data conversions and later are rescheduled for the instruction translation in the local DBMS environment. The intelligent translator and mapper handle the objects and provide the exact meaning of the data and control instructions. Finally synchronously and asynchronously exited task scheduling policies and concurrency control procedures are suggested.