Abstract
Webbases are database systems that enable creation of Web applications that allow end users to shop around for products and services at various Web sites without having to manually browse and fill out forms at each of these sites. In this paper we describe XRover which is an implementation of the physical layer of the webbase architecture. This layer is primarily responsible for automatically locating and extracting dynamic data from Web sites, i.e data that can only be obtained by form fill-outs. We discuss our experience in building XRover using FLORA, a deductive object-oriented system.
XRover is a registered trademark of XSB Inc.
Work supported in part by the ARCHIMEDES Contract SP0103-99-C-002 from Defense Logistics Agency, by NSF SBIR Award 9960485, by NSF grants CCR-9711386, EIA-9705998, and INT9809945, and by a SPIR grant from New York State and XSB, Inc.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
S. Abiteboul, P. Buneman, and D. Suciu. Data on the Web. Morgan Kaufmann, San Francisco, CA, 2000.
J.L. Ambite, N. Ashish, G. Barish, C.A. Knoblock, S. Minton, P.J. Modi, I. Muslea, A. Philpot, and S. Tejada. Ariadne: A system for constructing mediators for internet sources. In Proc. of SIGMOD, 1998.
P. Atzeni, A. Masci, G. Mecca, P. Merialdo, and E. Tabet. Ulixes: Building relational views over the web. In Proc. of ICDE, page 576, 1997.
A.J. Bonner and M. Kifer. An overview of transaction logic. Theoretical Computer Science, 133:205–265, October 1994.
A.J. Bonner and M. Kifer. A logic for programming database transactions. In J. Chomicki and G. Saake, editors, Logics for Databases and Information Systems, pages 117–166. Kluwer Academic Publishers, 1998.
H. Davulcu, J. Freire, M. Kifer, and I.V. Ramakrishnan. A layered architecture for querying dynamic web content. In ACM SIGMOD Conference on Management of Data, June 1999.
H. Davulcu, G. Yang, M. Kifer, and I.V. Ramakrishnan. Computational aspects of resilient data extraction from semistructured sources. In ACM Symposium on Principles of Database Systems, May 2000.
http://www.jango.com. Jango Corporation.
M. Kifer. Deductive and object-oriented data languages: A quest for integration. In Proc. of DOOD, pages 187–212, 1995.
M. Kifer, G. Lausen, and J. Wu. Logical foundations of object-oriented and framebased languages. Journal of ACM, 42:741–843, July 1995.
G. Mecca, P. Atzeni, A. Masci, P. Merialdo, and G. Sindoni. The araneus web-base management system. In Proc. of SIGMOD, pages 544–546, 1998.
M. Perkowitz, R.B. Doorenbos, O. Etzioni, and D.S. Weld. Learning to understand information on the internet: An example-based approach. Journal of Intelligent Information Systems, 8(2):133–153, March 1997.
K. Sagonas, T. Swift, and D.S. Warren. XSB as an efficient deductive database engine. In ACM SIGMOD Conference on Management of Data, pages 442–453, New York, May 1994. ACM.
G. Yang and M. Kifer. Implementing an efficient dood system using a tabling logic engine. In First International Conference on Computational Logic, DOOD-2000 Stream, July 2000.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2000 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Davulcu, H., Yang, G., Kifer, M., Ramakrishnan, I.V. (2000). Design and Implementation of the Physical Layer in WebBases: The XRover Experience. In: Lloyd, J., et al. Computational Logic — CL 2000. CL 2000. Lecture Notes in Computer Science(), vol 1861. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-44957-4_73
Download citation
DOI: https://doi.org/10.1007/3-540-44957-4_73
Published:
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-67797-0
Online ISBN: 978-3-540-44957-7
eBook Packages: Springer Book Archive