Abstract:
A distributed database is a database with
its data elements stored at several sites of a
computer network. Certain data items may be
redundantly stored at more than one site for
reliability reasons. A replicated database is a
distributed database in which multiple copies of the
same data items are stored at different sites.
Distributed applications frequently use replication
as a means to achieve higher level of performance,
reliability and availability. Replication is a
technique for automatically maintaining the
availability of data despite server failures. If data
are replicated at two or more failure-independent
servers then client software may be able to access
data at alternative servers. The basic problem with
data replication is update propagation. In this
paper, we propose a system that handles replica
updates in a distributed database system called Lazy
and Eager. This system will be implemented by
using C#.NET and Access database.
