Issues in Distributed Real Time Replicated Database System

Abstract

Issues in Distributed Real Time replicated Database Systems What newlineproven architectural approach should you follow to create nearly-identical newlinecopies of the data and to manage the integrity of the copies if they can be newlineupdated at both the source and target within a replication. The time expressed newlinein the form of a deadline is a critical factor to be considered in distributed real newlinetime transaction. The completion of transactions on or before its deadline is one newlineof the most important performance objectives of DRTDBS. There are several newlineimportant factors that contribute to the difficulty in meeting the deadlines of a newlinedistributed transaction. One of the most significant factors is the data conflict newline7 newlineamong transactions. A number of real time concurrency control protocols have newlinebeen proposed in the past. When a data conflict occurs between an executing newlineand a committing transaction, a commit protocol has to work with concurrency newlinecontrol protocol to handle it and to ensure the transaction atomicity. Design newlineissues: Replication set size. Decide whether to replicate an entire table, a subset newlineof a table, or data from more than one table. This is a tradeoff among the newlineamount of data that changes, the overall table size, and the complexity of the newlinelink. A Replication set data changes at the target have to occur and if the source newlinewants to see the changes, then try to make the changes naturally nonconflicting newlineto avoid the need for conflict detection and resolution and the newlineReplication frequency are decide the appropriate timing of the replication for newlinethe requirements and optimize the use of computing resources. newlineMany issues affecting the design of A DRTDBS to maintain its newlinerequirements; Data Consistency and Scalability are the main issues that are newlineconsidered in this paper. All of those critical systems need data to be obtained newlineand updated in a timely fashion, but sometimes data that is required at a newlineparticular location is not available when it is needed and getting it from remote newlinesite may take too long before which the data may become inv