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	Hugh Darwen -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-10-16)
		Hugh Darwen, employee of IBM UK from 1967 to 2004, has been involved in the history of the (Click link for more info and facts about relational model) relational model since the beginning.
		First degree was in Zoology from the (Click link for more info and facts about University of Birmingham) University of Birmingham.
		Contains material related to the book and links to Hugh Darwen's seminar and lecture slides.
	www.absoluteastronomy.com /encyclopedia/h/hu/hugh_darwen.htm (176 words)

	Issues with the logical consistency of The Third Manifesto (Site not responding. Last check: 2007-10-16)
		Date and Darwen presented the maxim: All logical difference are big differences and it's corollary All logical mistakes are big mistakes as central to their work on the Third Manifesto.
		It is because Date and Darwen claim that the structure of domains is orthogonal to support of the relational model, that this issue cannot be dismissed by asserting that there is confusion about the exact definition of a simple domain.
		Here is the initial response by Hugh Darwen to these articles as it is available on the size of DBM site and published in the DBM magazine.
	www.gits.nl /OOR.html (658 words)

	ON DARWEN’S “HANDLING OF MISSING INFORMATION WITHOUT USING NULLS”
		Hugh Darwen Responds: Thank you for responding to my request for more information about your objections to and questions on my slide presentation (not a paper, yet!), HTHMIWUN.
		Darwen refers to “keeping a historical record of all projects an employee has ever worked on”.
		Darwen claims that the two-relvar design “is really just recognizing that we are dealing with two distinct predicates”.
	www.dbdebunk.com /page/page/1706744.htm (2025 words)

	Christopher J. Date - Wikipedia, the free encyclopedia
		He was also involved with Edgar F. Codd's relational model for database management.
		He left IBM in 1983 and is the current principal maintainer and developer of the relational model, together with Hugh Darwen.
		His book An Introduction to Database Systems, currently in its 8th edition, is the standard text on the subject; it has sold well over 700,000 copies not counting translations and is used by several hundred colleges and universities worldwide.
	en.wikipedia.org /wiki/Christopher_J._Date (222 words)

	Hugh Darwen Lecture: The Third Manifesto (Site not responding. Last check: 2007-10-16)
		Alphora is pleased to announce that Hugh Darwen, author, lecturer and database theorist, will be speaking in Provo on Monday, February 3, 2003.
		The Third Manifesto is a paper by Hugh Darwen and C.J. Date, proposing a foundation for database management systems based firmly in E.F. Codd's "Relational Model of Data for Large Shared Data Banks" (1970).
		The stern technical discussion is interspersed with anecdotes and imaginative episodes of light relief, but with a serious message, delivered in an unusual style.
	www.alphora.com /tiern.asp?ID=DARWENLEC (359 words)

	DBMS Letter to the Editor -- From C. J. Date (Site not responding. Last check: 2007-10-16)
		(I say "we," because both I and Hugh Darwen, my coauthor on the Manifesto, wish to make it absolutely clear that the Manifesto is a joint effort.) However, such a response is much too glib and perhaps a little offensive, so let me be more specific.
		Hugh Darwen and C.J. Date: "The Third Manifesto." ACM SIGMOD Record 24, No.
		I will only add that both Hugh and I find it very galling to be so thoroughly misunderstood after we have tried to say what we mean as carefully as we know how.
	www.dbmsmag.com /dateltr.html (932 words)

	University of Derby - Untouched Formula Could Reshape Database Landscape (Site not responding. Last check: 2007-10-16)
		He is developing a software program based on the database language ‘Tutorial D’, invented by international experts Hugh Darwen and Chris Date six years ago.
		Darwen and Date claim Tutorial D could be significantly more reliable and easier to use than the dominant computer database language SQL, which is used by most large global corporations to construct and use databases.
		Mr Darwen, a retired database specialist with computer giant IBM, whom he represented for many years in the development of the international standard for SQL, has welcomed Mr Voorhis’s research study.
	www.derby.ac.uk /press-office/newslist.asp?ID=624 (353 words)

	dateresp.htm
		Hugh Darwen adds: My co-initialee, Humpty Dumpty, is one of my favorite literary characters, and I've often used Carroll's joke at my own expense when I've felt a need to confess to some possible abuse of a word.
		Johnston's seems to imply, "Who does Darwen think he is, claiming to know better than Dr. Codd what a relation is?"-a kind of adhominery that I find is often resorted to by people who are running short of good technical argument [13].
		Darwen is certainly right that I haven't 'given us a replacement for...
	www.dbpd.com /vault/dateresp.htm (8168 words)

	Hugh Darwen joins DCS teaching staff, 20/10/05, Computer Science News
		Hugh Darwen joins DCS teaching staff, 20/10/05, Computer Science News
		We welcome Hugh Darwen, an expert in database design, to the Department, after a long career at IBM.
		He has been the IBM representative in the SQL standardisation committee and, along with his co-author CJ Date, a promoter of relational models.
	blogs.warwick.ac.uk /dcsnews/entry/hugh_darwen_joins (109 words)

	Print Version - Chris Date and Hugh Darwen Reply \| Business intelligence, data warehousing and analytics editorial from ... (Site not responding. Last check: 2007-10-16)
		Summary: Date and Darwen respond to Tom Johnston.
		One of the first people to recognize and support Codd's pioneering work on the relational model, he was involved in technical planning for the IBM products SQL/DS and DB2.
		Hugh Darwen is a database specialist and U.K. Technical Staff Member for IBM United Kingdom Limited.
	www.dmreview.com /editorial/dmreview/print_action.cfm?articleId=6126 (1049 words)

	Authors
		Our Quiz Master, Hugh Darwen, is justifiably described in The Official Encyclopedia of Bridge as the world's leading authority on double-dummy problems.
		Copies of his one book on the subject, Bridge Magic, published in 1973, are still eagerly sought by aficionados of the DD genre.
		Professionally, Hugh has worked in software development for IBM since 1967 and is an internationally-known specialist in the field of relational databases, in which he has several acclaimed, co-authored publications.
	www.bridge-plus.co.uk /authors.htm (1795 words)

	Amazon.com: Books: Foundation for Future Database Systems: The Third Manifesto (2nd Edition) (Site not responding. Last check: 2007-10-16)
		And in that connection, we would like to mention another reason we feel the book is timely: namely, the fact that the SQL standards bodies, both national and international, are currently at work on a proposal called SQL3 that addresses some of the same issues as our Manifesto does.
		Hugh Darwen adds: My gratitude to my colleague and friend, Chris Date, goes without saying.
		Chris Date adds: If Hugh feels he has learned from me over the years, I can assure you (and him) that I have most certainly learned a great deal from him!--a state of affairs for which I will always be grateful.
	www.amazon.com /exec/obidos/tg/detail/-/0201709287?v=glance (3028 words)

	Amazon.ca: Books: Guide to the SQL Standard (Site not responding. Last check: 2007-10-16)
		It is also one of the most up-to-date SQL books around and one of the few to cover the most recent extensions of SQL, such as the Call-Level Interface (SQL/CLI) and the Persistent Stored Modules feature (SQL/PSM).
		If you want to go beyond the SQL92 standard, which is covered by most other SQL books, then Date and Darwen's manual is for you.
		The Date and Darwen book does not assume that you are using any particular SQL dialect, so it can be used with any standard SQL database.
	www.amazon.ca /exec/obidos/ASIN/0201558122 (278 words)

	Amazon.ca: Books: Temporal Data & the Relational Model (Site not responding. Last check: 2007-10-16)
		In order to comprehend this book in any meaningful fashion, the reader will have to develop an understanding of predicate calculus, which is a specialized version of set theory and its logic.
		Previous exposure to "Foundation for Object/Relational Databases: The Third Manifesto," by Date and Darwen, is highly recommended.
		While their approach is necessary, it does entail endless dry proofs of the prerequisite material needed to develop a general theory of temporal data.
	www.amazon.ca /exec/obidos/ASIN/1558608559 (1352 words)

	Book Review: CJ Date: An Introduction to Database Systems, Relational Database Writings 1994-1997, Foundation for ...
		It is a fun read, with some delicious polemic, like Darwen – who has occasionally paused from writing software to speak a few truths in jest – denying the libel of being a “research scientist”.
		There certainly are tuple constraints, always immediately checkable; but the need to check some relvar constraints at commit is shown by Date’s own example of an insert to and delete from a relvar of fixed cardinality.
		The resultant inescapable formal underwriting of connection traps is not described, however, but your now repentant reviewer’s contribution to leading Darwen up this garden path is generously acknowledged.
	www.btinternet.com /~adrian.larner/review/date7.htm (3167 words)

	DBMS Interview - October 1994
		He recently worked with David McGoveran to solve problems in view updatability, and collaborated with Hugh Darwen on "The Third Manifesto," a document that defines the qualities and features in relational DBMSs necessary to support object-oriented operations.
		DATE: Hugh Darwen and I have watched what the industry has been doing for the last few years, and we've been getting increasingly depressed.
		Finally, this year, Hugh wrote down the first cut of what he caused, "The Third Manifesto," a manifesto for the way we think the database industry should move forward.
	www.dbmsmag.com /int9410.html (5665 words)

	Amazon.co.uk: Books: Foundation for Future Database Systems: The Third Manifesto (Site not responding. Last check: 2007-10-16)
		Date and Darwen present a precise, formal definition of an abstract model of data that can be used as a blueprint for designing both databases and database languages -- and as a rock-solid foundation for integrating relational and object technologies.
		His An Introduction to Database Systems, Seventh Edition is the standard text on the subject, and has sold well over half a million copies worldwide.
		Hugh Darwen has been involved in software development since 1967, and with relational database technology since 1978.
	www.amazon.co.uk /exec/obidos/ASIN/0201709287 (686 words)

	Amazon.com: Books: Foundation for Object / Relational Databases: The Third Manifesto (Site not responding. Last check: 2007-10-16)
		Third, we are--of course!--deeply indebted to our wives, Lindsay Darwen and Lindy Date, for their unfailing support throughout this project and so many others over the years.
		Date and his cohort, Darwen (who tries too hard), derive material from a litany of sources, yet the litany is rather more remarkable for some of its patent omissions than for its completeness.
		Once again, Date has steered clear of security considerations, and--where he dares to address them--he continues to confuse the most basic terminology, sounding, as it were, like Fernandez and Wood reanimated on tetrodotoxin and living in some bizarre Winogradesque world of datasets and clusters.
	www.amazon.com /exec/obidos/tg/detail/-/0201309785?v=glance (4428 words)

	More-j Darwen at Local.co.uk (Site not responding. Last check: 2007-10-16)
		It is arranged in forename order and to minimise the size of the index, the surname has been omitted.
		The latest news and sport from Darwen and surrounding areas.
		Darwen Cricket Club Birch Hall, Mostyn Street, Darwen, Lancs.
	www.local.co.uk /Darwen/More-j (601 words)

	SQL Book Reviews
		Almost all of the material is also in Date and Darwen's book, minus the mistakes.
		The four guides are known by their authors' names: "Cannan and Otten", "Date and Darwen", "Gulutzan and Pelzer", "Melton and Simon".
		C.J.Date with Hugh Darwen, A Guide To The SQL Standard, Fourth Edition; Addison-Wesley, 1997.
	www.ocelot.ca /books.htm (1325 words)

	CONSTRAINTS AND PREDICATES: A BRIEF TUTORIAL PART 1 (Site not responding. Last check: 2007-10-16)
		This three-part article is intended as a tutorial on the crucial notion of integrity constraints (which I'll usually abbreviate to just constraints) and the associated and equally crucial notion of predicates.
		FOUNDATION OF DATABASE MANAGEMENT SYSTEMS: THE THIRD MANIFESTO, by Hugh Darwen and myself, referred to hereinafter as THE THIRD MANIFESTO book, or just THE MANIFESTO for short--these notions are absolutely fundamental, and yet they don't seem to be very well understood in the database community at large.
		THE THIRD MANIFESTO, Hugh Darwen and I explicitly introduced the term relation variable, distinguishing it from the term relation value(relation values are the kinds of values that relation variables are permitted to have).
	www.dbdebunk.com /page/page/622772.htm (2913 words)

	Shopping Resources - searchuk.com (Site not responding. Last check: 2007-10-16)
		For the ex-pupils of Darwen Vale High School - 5th form of 1982.
		Loan providers for people who may have CCJ's, arrears, non provable incomes or have been turned down in the past.
		An air conditioned cafe and takeaway located on Darwen's main street and open 8am - 4pm, Mondays to Saturdays (except Bank Holidays).
	test1.cybwell.ch /directory/810/810165.htm (588 words)

	TDAN Book Review - Manifesto - Date Darwen (Site not responding. Last check: 2007-10-16)
		None of them are as intense as the Foundation for Object/Relational Databases, The Third Manifesto by C.J.Date and Hugh Darwen.
		Date and Darwen feel that the relational model is and will be highly relevant to database theory and practice.
		Date and Darwen feel that most of the limitations of current relational technology can be attributed to the use of the SQL language and the incorrect implementation of relational databases by database vendors.
	www.tdan.com /book011.htm (644 words)

	binarycloud PHP web application framework - Links.HomePage (Site not responding. Last check: 2007-10-16)
		The relational model was invented by Dr. Ted Codd and subsequently maintained and developed by Chris Date and Hugh Darwen, as a general model of data.
		The authors of this page include Chris Date, Fabian Pascal and Hugh Darwen who are all respected members of the database community.
		Always being on their crusade to explain misconception, this collection of articles and email correspondencies is a great reading.
	www.binarycloud.com /index.php/Links/HomePage (552 words)

	DBLP: C. J. Date
		Date, Hugh Darwen: Toward a Model of Type Inheritance.
		Date, Hugh Darwen: A Guide to SQL Standard, 4th Edition Addison-Wesley 1997
		Date, Hugh Darwen: Relational Database Writings 1989-1991 Addison-Wesley 1992
	www.informatik.uni-trier.de /~ley/db/indices/a-tree/d/Date:C=_J=.html (360 words)

	Database Programming & Design August 1998 According to Date (Site not responding. Last check: 2007-10-16)
		The Manifesto is, at long last, ready for general publication; in fact, barring unforeseen delays, the book version should be available by the time this column appears in print.
		By dint of application, though, My good friend Hugh and I Have tackled this great question And grappled with the Why Of objects and relations And (more germane) the How And so we're pleased to offer you Our Manifesto now.
		His most recent books are A Guide to the SQL Standard (4th edition, 1997) and Foundation for Object/Relational Databases: The Third Manifesto (1998), both coauthored with Hugh Darwen and published by Addison-Wesley.
	www.dbpd.com /vault/9808date.html (1768 words)

	Foundation for Object / Relational Databases: The Third Manifesto:Date, C. J.; Darwen, Hugh:0201309785:eCampus.com
		Edition: 1st - Author(s): Date, C. Darwen, Hugh
		There are currently two 'camps' for database development -- relational, which is predominant and object, which is growing.
		This offers a rock-solid foundation for integrating relational and object technologies, a foundation that is evolutionary, not revolutionary.
	www.ecampus.com /bk_detail.asp?isbn=0201309785 (138 words)

	Rel: an open source implementation of Date & Darwen's Tutorial D \| Lambda the Ultimate
		Rel: an open source implementation of Date & Darwen's Tutorial D
		More from Slashdot, which today points to an article on Rel, Dave Voorhis' open source implementation of Tutorial D (see Chris Date and Hugh Darwen's The Third Manifesto for a discussion of the rationale behind this language).
		Voorhis explains his motives for creating the implementation in an article on the (currently somewhat sparse) Rel Wiki.
	lambda-the-ultimate.org /node/view/316 (1516 words)

	SIGMOD Record 25(4): 6-7(1996)
		In Reply to Domains, relations and Religious Wars.
		Hugh Darwen: In Reply to Domains, relations and Religious Wars.
		@article{DBLP:journals/sigmod/Darwen96, author = {Hugh Darwen}, title = {In Reply to Domains, relations and Religious Wars}, journal = {SIGMOD Record}, volume = {25}, number = {4}, year = {1996}, pages = {6-7}, ee = {db/journals/sigmod/Darwen96.html}, bibsource = {DBLP, http://dblp.uni-trier.de} }
	www.informatik.uni-trier.de /~ley/db/journals/sigmod/Darwen96.html (198 words)

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