The Piazza peer data management project

ABSTRACT

A major problem in today's information-driven world is that sharing heterogeneous, semantically rich data is incredibly difficult. Piazza is a peer data management system that enables sharing heterogeneous data in a distributed and scalable way. Piazza assumes the participants to be interested in sharing data, and willing to define pairwise mappings between their schemas. Then, users formulate queries over their preferred schema, and a query answering system expands recursively any mappings relevant to the query, retrieving data from other peers. In this paper, we provide a brief overview of the Piazza project including our work on developing mapping languages and query reformulation algorithms, assisting the users in defining mappings, indexing, and enforcing access control over shared data.

REFERENCES

• 1: Karl Aberer , Philippe Cudré-Mauroux , Manfred Hauswirth, A framework for semantic gossiping, ACM SIGMOD Record, v.31 n.4, December 2002 [doi>10.1145/637411.637419]
• 2: Karl Aberer , Philippe Cudré-Mauroux , Manfred Hauswirth, The chatty web: emergent semantics through gossiping, Proceedings of the 12th international conference on World Wide Web, May 20-24, 2003, Budapest, Hungary [doi>10.1145/775152.775180]
• 3: Serge Abiteboul , Oliver M. Duschka, Complexity of answering queries using materialized views, Proceedings of the seventeenth ACM SIGACT-SIGMOD-SIGART symposium on Principles of database systems, p.254-263, June 01-04, 1998, Seattle, Washington, United States [doi>10.1145/275487.275516]
• 4: Jon Louis Bentley, Multidimensional binary search trees used for associative searching, Communications of the ACM, v.18 n.9, p.509-517, Sept. 1975 [doi>10.1145/361002.361007]
• 5: T. Berners-Lee, J. Hendler, and O. Lassila. The semantic web. Scientific American, May 2001.
• 6: M. Dean, D. Connolly, F. van Harmelen, J. Hendler, I. Horrocks, D. McGuinness, P. Patel-Schneider, and L. Stein. OWL web ontology language 1.0 reference, 2002. Manuscript available from http://www.w3.org/2001/sw/WebOnt/.
• 7: AnHai Doan , Pedro Domingos , Alon Y. Halevy, Reconciling schemas of disparate data sources: a machine-learning approach, ACM SIGMOD Record, v.30 n.2, p.509-520, June 2001
• 8: Hector Garcia-Molina , Yannis Papakonstantinou , Dallan Quass , Anand Rajaraman , Yehoshua Sagiv , Jeffrey Ullman , Vasilis Vassalos , Jennifer Widom, The TSIMMIS Approach to Mediation: Data Models and Languages, Journal of Intelligent Information Systems, v.8 n.2, p.117-132, March/April 1997 [doi>10.1023/A:1008683107812]
• 9: Alon Y. Halevy, Answering queries using views: A survey, The VLDB Journal — The International Journal on Very Large Data Bases, v.10 n.4, p.270-294, December 2001 [doi>10.1007/s007780100054]
• 10: Alon Y. Halevy , Zachary G. Ives , Peter Mork , Igor Tatarinov, Piazza: data management infrastructure for semantic web applications, Proceedings of the 12th international conference on World Wide Web, May 20-24, 2003, Budapest, Hungary [doi>10.1145/775152.775231]
• 11: A. Halevy, Z. Ives, D. Suciu, and I. Tatarinov. Schema Mediation in Peer Data Management System. In ICDE, 2003.
• 12: Institute for Systems Biology. http://www.systemsbiology.org.
• 13: Z. Ives, A. Halevy, and D. Weld. Integrating Network-Bound XML Data. IEEE Data Engineering Bulletin, 24(2), 2001.
• 14: Anastasios Kementsietsidis , Marcelo Arenas , Renée J. Miller, Mapping data in peer-to-peer systems: semantics and algorithmic issues, Proceedings of the 2003 ACM SIGMOD international conference on Management of data, June 09-12, 2003, San Diego, California [doi>10.1145/872757.872798]
• 15: Donald Kossmann, The state of the art in distributed query processing, ACM Computing Surveys (CSUR), v.32 n.4, p.422-469, Dec. 2000 [doi>10.1145/371578.371598]
• 16: Alon Y. Levy , Anand Rajaraman , Joann J. Ordille, Querying Heterogeneous Information Sources Using Source Descriptions, Proceedings of the 22th International Conference on Very Large Data Bases, p.251-262, September 03-06, 1996
• 17: J. Madhavan, P. Bernstein, K. Chen, A. Halevy, and P. Shenoy. Corpus-based Schema Matching. In Workshop on Information Integration on the Web at IJCAI, 2003.
• 18: J. Madhavan and A. Halevy. Composing Mappings among Data Sources. In VLDB, 2003.
• 19: T. Malik and A. Szalay. Skyquery: A web service approach to federate databases. In Proceedings of CIDR, 2003.
• 20: G. Miklau and D. Suciu. Controlling Access to Published Data Using Cryptography. In VLDB, 2003.
• 21: Renée J. Miller , Laura M. Haas , Mauricio A. Hernández, Schema Mapping as Query Discovery, Proceedings of the 26th International Conference on Very Large Data Bases, p.77-88, September 10-14, 2000
• 22: Michael Stonebraker , Paul M. Aoki , Witold Litwin , Avi Pfeffer , Adam Sah , Jeff Sidell , Carl Staelin , Andrew Yu, Mariposa: a wide-area distributed database system, The VLDB Journal — The International Journal on Very Large Data Bases, v.5 n.1, p.048-063, January 1996 [doi>10.1007/s007780050015]
• 23: Jeffrey D. Ullman, Principles of database and knowledge-base systems, Vol. I, Computer Science Press, Inc., New York, NY, 1988
• 24: B. Yang and H. Garcia-Molina. Designing a super-peer network. In ICDE, 2003.