Authors:
Anis Haj Said
1
;
Bruno Sadeg
1
;
Laurent Amanton
1
and
Béchir Ayeb
2
Affiliations:
1
LITIS, UFR of Sciences and Techniques, France
;
2
PRINCE, Faculty of Sciences, Tunisia
Keyword(s):
Real-time database, distributed system, transaction, replication , replication control protocol, data consistency.
Related
Ontology
Subjects/Areas/Topics:
Databases and Information Systems Integration
;
Enterprise Information Systems
;
Object-Oriented Database Systems
Abstract:
Data replication is often used in distributed database systems to improve both fault tolerance and performance purposes. However, such systems must ensure replicas consistency. In this paper, we discuss the contributions of data replication in distributed real-time database systems (DRTDBS) and we then present RT-RCP, a replication control protocol we designed for DRTDBS. We introduce a new entity called List of available copies (LAC) which is a list related to each data item in the database. A LAC of a data item contains all or a part of references of its updated replicas. This allows the database to have a dynamic level of replication.