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Dissertation Information for Sujata Banerjee

NAME:
- Sujata Banerjee

DEGREE:
- Ph.D.

DISCIPLINE:
- Computer Science

SCHOOL:
- University of Southern California (USA) (1993)

ADVISORS:
- Victor O. K. Li

COMMITTEE MEMBERS:
- None

MPACT Status: Incomplete - Inspected

Title: Distributed database systems in high-speed networks

Abstract: "In this dissertation, two research areas--high speed computer networks and distributed database systems have been brought together. The concept of distributed database systems has been around for a decade now. In a distributed database system (DDBS), a database is partitioned into smaller databases and distributed over multiple sites in a computer network. Associated with a DDBS, are functions like query processing and concurrency control. Traditionally in DDBS research, the computer network has been considered a performance bottleneck and a lot of research effort has been directed towards the design of database operations that minimize the data transmission cost. With the development of high speed networks, the network transmission costs go down and new algorithms that efficiently utilize the huge bandwidth available are required. In this work, the various issues involved in the implementation of distributed database systems (DDBS) in a high speed environment are considered, and some new techniques are presented.

The motivation for this research is two-fold. One factor is to exploit the high band-width resource in getting high transaction throughputs. In fact, there is no justification for implementing DDBS in high speed networks if no gain in throughput is observed with increase in the network speed. The other motivating factor is that DDBS are worthy candidates for applications of broadband networks. Distributed database systems if adapted to work well in a high speed environment would satisfy the criteria of a bandwidth hungry application. In the proposed DDBS design, the communication network is given a more active role, to exploit the large end-to-end bandwidths in getting higher transaction throughput.

First, the issues involved in developing this distributed application in a high speed environment are identified. Then the inadequacy of existing database protocols in utilizing the Gigabit-per-second network is demonstrated. And then, an alternative DDBS design and a new concurrency control protocol (Send-on-Demand) that performs better than traditional protocols in a high speed network is developed. Both analytical and simulation models are developed to gauge and compare the performance of the new protocols developed with that of existing protocols. Finally, the failure recovery issues are addressed. "

MPACT Scores for Sujata Banerjee

A = 1
C = 3
A+C = 4
T = 1
G = 1
W = 1
TD = 1
TA = 0
calculated 2010-09-10 16:51:49

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