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{{short description|American computer scientist}}
{{for|the U.S. Representative|David M. De Witt}}
{{Infobox scientist
{{Refimprove|date=March 2009}}
| name = David J. DeWitt
| image = DavidDeWitt.jpg
| caption =
| birth_date = {{circa}} {{birth year and age|1948}}
| birth_place = [[United States]]
| death_date =
| death_place =
| residence =
| field = [[Computer science]]
| work_institution = [[University of Wisconsin–Madison]], [[Microsoft]], [[Massachusetts Institute of Technology]]
| occupation = Technical Fellow at [[Microsoft]]
| known_for =
| alma_mater = [[Colgate University]]<br> [[University of Michigan]]
| awards = [[IEEE Emanuel R. Piore Award]] {{small|(2009)}}
| website = {{URL|pages.cs.wisc.edu/~dewitt/}}
}}


'''David J. DeWitt''' is the [[John P. Morgridge]] Professor (Emeritus) of [http://www.cs.wisc.edu Computer Sciences] at the [[University of Wisconsin–Madison]]. Professor DeWitt received a B.A. degree from [[Colgate University]] in 1970, and a Ph.D. from the [[University of Michigan]] in 1976. He then joined the [[University of Wisconsin-Madison]] and started the [[Wisconsin Database Group]], which he has been leading for more than 30 years.
'''David J. DeWitt''' (born July 20, 1948) is a [[computer scientist]] specializing in [[database management system]] research at the [[Massachusetts Institute of Technology]].<ref>{{Cite tweet |user=davidjdewitt |number=774232014572625920 |date = 9 September 2016 |title=Last day as a MSFT employee. Have moved to Boston and am hanging out with Stonebraker at MIT.}}</ref> Prior to moving to MIT, DeWitt was the [[John P. Morgridge]] Professor (Emeritus) of Computer Sciences at the [[University of Wisconsin–Madison]]. He was also a [[Fellow#Industry and corporate|Technical Fellow]] at [[Microsoft]], leading the Microsoft Jim Gray Systems Lab at [[Madison, Wisconsin|Madison]], Wisconsin. Professor DeWitt received a B.A. degree from [[Colgate University]] in 1970, and a Ph.D. from the [[University of Michigan]] in 1976. He then joined the [[University of Wisconsin-Madison]] and started the [[Wisconsin Database Group]], which he led for more than 30 years.


Professor DeWitt is known for his pioneering research in the areas of [[parallel databases]], [[benchmarking]], [[object-oriented databases]], and [[XML databases]]. He is a member of the [[National Academy of Engineering]], and a Fellow of the [[Association for Computing Machinery]].
Professor DeWitt is known for his research in the areas of [[parallel databases]], [[benchmarking]], [[object-oriented databases]], and [[XML databases]].


He was elected a member of the [[National Academy of Engineering]] (1998) for the theory and construction of database systems.<ref name="NAE">{{cite web|url=http://www.nae.edu/MembersSection/Directory20412/30334.aspx |title=NAE Members Directory - Dr. David J. DeWitt |publisher=[[National Academy of Engineering|NAE]] |accessdate=December 31, 2010}}</ref> He is also a Fellow of the [[Association for Computing Machinery]].
⚫
He received the ACM SIGMOD Innovations Award (now renamed [[SIGMOD Edgar F. Codd Innovations Award]]) in 1995 for his contributions to the database systems field. In 2009, ACM recognized the seminal contributions of his Gamma parallel database system project with the ACM Software Systems Award. Also in 2009, he received the [[IEEE Emanuel R. Piore Award]] for his contributions to the database systems field.


⚫
He received the ACM SIGMOD Innovations Award (now renamed [[SIGMOD Edgar F. Codd Innovations Award]]) in 1995 for his contributions to the database systems field. In 2009, ACM recognized the seminal contributions of his Gamma parallel database system project with the [[ACM Software System Award]]. Also in 2009, he received the [[IEEE Emanuel R. Piore Award]] for his contributions to the database systems field.<ref>{{cite web |url=http://www.ieee.org/documents/piore_rl.pdf |title=IEEE Emanuel R. Piore Award Recipients |publisher=[[IEEE]] |accessdate=March 20, 2021|archive-url=https://web.archive.org/web/20101124232834/http://ieee.org/documents/piore_rl.pdf |archive-date=November 24, 2010 |url-status=dead }}</ref>
Currently, he is a technical fellow at [[Microsoft]], leading the Microsoft Jim Gray Systems Lab at [[Madison, Wisconsin]], and is one of the leaders of the [[Wisconsin Database Group]].

==DeWitt Clause==
Several commercial database vendors include an [[end-user license agreement]] provision, known as the ''DeWitt Clause'', that prohibits researchers and scientists from explicitly using the names of their systems in academic papers.<ref name="HellersteinStonebraker2005">{{cite book|author1=Joseph M. Hellerstein|author2=Michael Stonebraker|title=Readings In Database Systems|url=https://books.google.com/books?id=7a48qSMuVcUC&pg=PA96|accessdate=18 July 2012|date=7 January 2005|publisher=MIT Press|isbn=978-0-262-69314-1|pages=96–}}</ref><ref>
{{cite web
| url = http://sqlmag.com/sql-server/devils-dewitt-clause
| title = The Devil's in the DeWitt Clause
| first = Brian
| last = Moran
| year = 2003
| archive-url = https://web.archive.org/web/20160719145221/http://sqlmag.com/sql-server/devils-dewitt-clause
| publication-date = 2003-04-03
| accessdate = 2018-01-11
| archive-date = 2016-07-19
}}
</ref>

In essence, a DeWitt Clause forbids the publication of database benchmarks that the database vendor has not sanctioned. The original DeWitt Clause was established by [[Oracle Corporation|Oracle]] at the behest of [[Larry Ellison]]. Ellison was displeased with a benchmark study done by David DeWitt in 1982, then an assistant professor, using his Wisconsin Benchmark program, which showed that Oracle's system had poor performance.<ref>
{{cite web
| url = http://www.eweek.com/c/a/Application-Development/DB-Test-Pioneer-Makes-History/
| title = DB Test Pioneer Makes History
| first = Timothy
| last = Dyck
| year = 2002
| publication-date = 2002-02-04
| accessdate = 2012-07-18
}}
</ref>

==References==
{{Reflist}}

==External links==
*{{official website|pages.cs.wisc.edu/~dewitt/}}

{{Authority control}}


{{DEFAULTSORT:Dewitt, David}}
{{DEFAULTSORT:Dewitt, David}}
[[Category:American computer scientists]]
[[Category:American computer scientists]]
[[Category:Fellows of the Association for Computing Machinery]]
[[Category:1995 fellows of the Association for Computing Machinery]]
[[Category:Year of birth missing (living people)]]
[[Category:Year of birth missing (living people)]]
[[Category:Living people]]
[[Category:Living people]]
[[Category:Microsoft technical fellows]]
[[Category:Database researchers]]
[[Category:Members of the United States National Academy of Engineering]]
[[Category:University of Michigan alumni]]

Latest revision as of 01:49, 21 November 2024

David J. DeWitt
Bornc. 1948 (age 75–76)
United States
Alma materColgate University
University of Michigan
OccupationTechnical Fellow at Microsoft
AwardsIEEE Emanuel R. Piore Award (2009)
Scientific career
FieldsComputer science
InstitutionsUniversity of Wisconsin–Madison, Microsoft, Massachusetts Institute of Technology
Websitepages.cs.wisc.edu/~dewitt/

David J. DeWitt (born July 20, 1948) is a computer scientist specializing in database management system research at the Massachusetts Institute of Technology.[1] Prior to moving to MIT, DeWitt was the John P. Morgridge Professor (Emeritus) of Computer Sciences at the University of Wisconsin–Madison. He was also a Technical Fellow at Microsoft, leading the Microsoft Jim Gray Systems Lab at Madison, Wisconsin. Professor DeWitt received a B.A. degree from Colgate University in 1970, and a Ph.D. from the University of Michigan in 1976. He then joined the University of Wisconsin-Madison and started the Wisconsin Database Group, which he led for more than 30 years.

Professor DeWitt is known for his research in the areas of parallel databases, benchmarking, object-oriented databases, and XML databases.

He was elected a member of the National Academy of Engineering (1998) for the theory and construction of database systems.[2] He is also a Fellow of the Association for Computing Machinery.

He received the ACM SIGMOD Innovations Award (now renamed SIGMOD Edgar F. Codd Innovations Award) in 1995 for his contributions to the database systems field. In 2009, ACM recognized the seminal contributions of his Gamma parallel database system project with the ACM Software System Award. Also in 2009, he received the IEEE Emanuel R. Piore Award for his contributions to the database systems field.[3]

DeWitt Clause

[edit]

Several commercial database vendors include an end-user license agreement provision, known as the DeWitt Clause, that prohibits researchers and scientists from explicitly using the names of their systems in academic papers.[4][5]

In essence, a DeWitt Clause forbids the publication of database benchmarks that the database vendor has not sanctioned. The original DeWitt Clause was established by Oracle at the behest of Larry Ellison. Ellison was displeased with a benchmark study done by David DeWitt in 1982, then an assistant professor, using his Wisconsin Benchmark program, which showed that Oracle's system had poor performance.[6]

References

[edit]
  1. ^ @davidjdewitt (9 September 2016). "Last day as a MSFT employee. Have moved to Boston and am hanging out with Stonebraker at MIT" (Tweet) – via Twitter.
  2. ^ "NAE Members Directory - Dr. David J. DeWitt". NAE. Retrieved December 31, 2010.
  3. ^ "IEEE Emanuel R. Piore Award Recipients" (PDF). IEEE. Archived from the original (PDF) on November 24, 2010. Retrieved March 20, 2021.
  4. ^ Joseph M. Hellerstein; Michael Stonebraker (7 January 2005). Readings In Database Systems. MIT Press. pp. 96–. ISBN 978-0-262-69314-1. Retrieved 18 July 2012.
  5. ^ Moran, Brian (2003). "The Devil's in the DeWitt Clause" (published 2003-04-03). Archived from the original on 2016-07-19. Retrieved 2018-01-11.
  6. ^ Dyck, Timothy (2002). "DB Test Pioneer Makes History" (published 2002-02-04). Retrieved 2012-07-18.
[edit]
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