[Colloquium] Wednesday, March 30, 2005 Yi Chen, University of Pennsylvania
Nita Yack
nitayack at midway.uchicago.edu
Mon Mar 28 06:55:29 CST 2005
COMPUTER SCIENCE
The University of Chicago
TALK
Wednesday, March 30, 2005
2:30 p.m.
Ryerson 251
Yi Chen,
University of Pennsylvania
www.cis.upenn.edu/~yicn/
Title: Managing XML Data Effectively in Relational Databases
Abstract XML has become a standard data representation format in
various applications, from bioinformatics, healthcare and astronomy, to
finance, legislative documents and government data. With the large
amount of data now being represented in XML, the question is raised of
how to effectively store, index, and access it to retrieve information.
Since relational databases have matured through more than 30 years of
development, it is natural to investigate whether this technology can
be leveraged to manage XML data.
In this talk, I present techniques for storing and querying XML data
using relational databases in different scenarios. When the schema of
XML data is not available, a generic storage mapping to relational
databases is proposed. Based on a novel bi-labeling scheme, an XML
query is translated to an SQL query. Compared with previous work, the
generated SQL query contains fewer joins and requires fewer disk
accesses to execute. When a schema is available, structural and
semantic constraint information of an XML document is used to guide the
mapping design. In contrast with previous work that only considers
structural information, the proposed mapping reduces the redundancy of
the XML data in its relational storage and enables efficient validation
of data correctness with respect to constraints.
Host: Anne Rogers
*The talk will be followed by refreshments in Ryerson 255*
Persons who need assistance should call 773-702-6614
Nita Yack
Departmental Administrator
Computer Science Department
1100 E. 58th Street - Room 151
Chicago, IL 60637
(773) 702-6019
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