Adaptive Replica-Management and Concurrency-Control Protocols for Page-Server DBMS
Ibrahim Jaluta
International Journal of Information Studies, Vol. 5, No. 3, 2013.
DOI: 
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Abstract:
In this paper, we present adaptive concurrency-control protocol, adaptive replica-management protocol, and Blink-
tree index algorithms for page-server database management systems in which the physical database is organized as a
sparse B-link-tree. In these algorithms, a transaction T at client A can update a record r in a U-locked data page (B-link tree
leaf-page) P cached at A, while transactions at other clients can simultaneously cache P and fetch available records other
than r in P. This would not be possible if T should X-lock P in order to update it (as in the standard concurrency-control
protocols). Hence, the degree of concurrency in the page-server system will be increased