Publication

Optimistic Algorithms for Partial Database Replication

Rodrigo Malta Schmidt, Fernando Pedone
2006
Conference Papers

Abstract

In this paper, we study the problem of partial database replication. Numerous previous works have investigated database replication, however, most of them focus on full replication. We are here interested in genuine partial replication protocols, which require replicas to permanently store only information about data items they replicate. We define two properties to characterize partial replication. The first one, Quasi-Genuine Partial Replication, captures the above idea; the second one, Non-Trivial Certification, rules out solutions that would abort transactions unnecessarily in an attempt to ensure the first property. We also present two algorithms that extend the Database State Machine to partial replication and guarantee the two aforementioned properties. Our algorithms compare favorably to existing solutions both in terms of number of messages and communication steps.

Official source

https://infoscience.epfl.ch/entities/publication/488f3c19-f49f-4be9-b2f2-89e5db18a44b

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Rodrigo Malta Schmidt, Fernando Pedone
2006
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/488f3c19-f49f-4be9-b2f2-89e5db18a44b

About this result

Related concepts (32)

Database

In computing, a database is an organized collection of data (also known as a data store) stored and accessed electronically through the use of a database management system. Small databases can be stored on a , while large databases are hosted on computer clusters or cloud storage. The design of databases spans formal techniques and practical considerations, including data modeling, efficient data representation and storage, query languages, security and privacy of sensitive data, and distributed computing issues, including supporting concurrent access and fault tolerance.

Optimistic replication

Optimistic replication, also known as lazy replication, is a strategy for replication, in which replicas are allowed to diverge. Traditional pessimistic replication systems try to guarantee from the beginning that all of the replicas are identical to each other, as if there was only a single copy of the data all along. Optimistic replication does away with this in favor of eventual consistency, meaning that replicas are guaranteed to converge only when the system has been quiesced for a period of time.

Global serializability

In concurrency control of databases, transaction processing (transaction management), and other transactional distributed applications, global serializability (or modular serializability) is a property of a global schedule of transactions. A global schedule is the unified schedule of all the individual database (and other transactional object) schedules in a multidatabase environment (e.g., federated database).

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