Alberto O. Mendelzon
| Alberto O. Mendelzon | |
|---|---|
| Born | July 28, 1951 Buenos Aires, Argentina |
| Died |
June 16, 2005 (aged 53) Toronto, Ontario, Canada |
| Nationality | Argentina |
| Fields | Computer Science |
| Institutions | University of Toronto |
| Alma mater | Princeton University |
| Doctoral advisor | Jeffrey Ullman |
| Known for |
Chase Web query languages Answering queries using views |
| Notable awards | Member of the Royal Society of Canada |
Alberto O. Mendelzon was an Argentine-Canadian computer scientist who died on June 16, 2005.
Alberto Mendelzon was born in Buenos Aires, Argentina. He graduated from the University of Buenos Aires in 1973. He then received a Ph.D. degree from Princeton University in 1979, where his advisor was Jeffrey Ullman. After that he was a post-doctoral fellow at the IBM T.J. Watson Research Center for a year before joining the faculty of the University of Toronto in 1980.
He was one of the pioneers who helped to lay the foundations of relational databases. His early work on database dependencies has been influential in both the theory and practice of data management. He has made fundamental contributions in the areas of graphical query languages, knowledge-base systems, and on-line analytic processing. His work has provided the foundation for languages used to query the structure of the web.
Mendelzon established some of the earliest results on using the relational data model. Together with his thesis advisor, Jeffrey Ullman, and fellow Princeton students, including David Maier and Yehoshua Sagiv, he co-authored a number of influential papers that laid out the fundamental issues and approaches for relational databases. In a now-famous paper (Maier, Mendelzon and Sagiv, TODS 1979), he introduced the chase, a method for testing implication of data dependencies that is now of widespread use in the database theory literature. This work has been highly influential: it is used, directly or indirectly, on an everyday basis by people who design databases, and it is used in commercial systems to reason about the consistency and correctness of a data design. New applications of the chase in meta-data management and data exchange are still being discovered.
In the 1980s, Mendelzon began an important line of work on graphical query languages. His work has been called prescient as it began before the World Wide Web, and nonetheless established many of the scientific principles required for designing languages to query the Web.
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