Extension of Multi-Version Concurrency Control Mechanisms for Long-Duration Transaction Based on Nested Transaction Model

Authors:
Liwei Wang;Zhiyong Peng
Affiliations:
Wuhan University;Wuhan University
Venue:
CIT '04 Proceedings of the The Fourth International Conference on Computer and Information Technology
Year:
2004

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Abstract

In this paper, we have extended multi-version concurrency control mechanisms for long-duration transaction based on nested transaction model, and explained how both intra- and inter-transaction concurrencydegree can be increased. Our method uses the concept of visible sets to allow a transaction to update an object updated by another uncommitted transaction, and defines dependency relationships between these transactions in order to guarantee consistency of databases.