BVAGQ-AR for Fragmented Database Replication Management

Fault-Tolerant Replication Based on Fragmented Objects

This paper describes a novel approach to fault-tolerance in distributed object-based systems. It uses the fragmented-object model to integrate replication mechanisms into distributed applications. This approach enables the use of customised code on a per-object basis to access replica groups and to manage consistency. The addition of fault tolerance to the infrastructure has only little overhea...

Data Quality Management in a Database Cluster with Lazy Replication

Abstract We consider the use of a database cluster with lazy replication. In this context, controlling the quality of replicated data based on users’ requirements is important to improve performance. However, existing approaches are limited to a particular aspect of data quality. In this paper, we propose a general model of data quality which makes the difference between “freshness” and “validi...

D Database Replication Protocols

Databases are replicated in order to obtain two complementary features: performance improvement and high availability. Performance can be improved when a database is replicated since each replica can serve read-only accesses without requiring any coordination with the rest of replicas. Thus, when most of the application accesses to the data are read-only, they can be served locally without prev...

Database Replication: A Tutorial

This chapter provides an in-depth introduction to database replication, in particular how transactions are executed in a replicated environment. We describe a suite of replication protocols and illustrate the design alternatives using a twostep approach. We first categorize replication protocols by only two parameters and present a simple example protocol for each of the resulting categories. F...

Database Replication Approaches