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Non-serializable executions in heterogeneous distributed database systems

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4 Author(s)
Mehrotra, S. ; Dept. of Comput. Sci., Texas Univ., Austin, TX, USA ; Rastogi, R. ; Korth, H.F. ; Silberschatz, Abraham

The concept of serializability has been the traditionally accepted notion of correctness in database systems. However, in a heterogeneous distributed database system (HDBMS) environment, ensuring serializability is a difficult task mainly due to the desire of preserving the local autonomy of the participating local database systems. The authors introduce a new correctness criterion fur HDBMSs, two-level serializability (2LSR), and show that it preserves database consistency in several HDBMS models. Further, they present a simple protocol for ensuring that schedules in an HDBMS environment are 2LSR. This protocol is easily implementable and does not violate the local autonomy of sites

Published in:

Parallel and Distributed Information Systems, 1991., Proceedings of the First International Conference on

Date of Conference:

4-6 Dec 1991

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