JANUARY 2007 NEWSLETTER




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PRESIDENT'S MESSAGE

Dear Members,

December is over, and yet DAMAday 2006 remains in my mind quite a memorable event. I want to thank everyone who has participated in making this event a success, and especially Wendy Wood our DAMAday director six in a row (!) and past president, a model of dedication to our chapter.

January is traditionally our break month, but not this year! We have an open invitation to all, not just the members, to come listen on the 10th to Chris Date, one of the long-time pillars of the scientific approach to the relational model. So we encourage you all who haven't been to a S.F. Chapter DAMA meeting for a long time, or not at all, to come join us and meet like-minded people. Chris will tell us about the gap between the DBMS and the Web worlds

February is around the corner and, continuing in the same track of discussion, on the 7th we have Jeff Pekrul from Genentech who will present an approach on how to bridge that gap between the ER and the XML worlds.

March is very busy: the DAMA International Symposium from Sunday the 4th to Thursday the 8th in Boston. We will also have a presentation on the future of DW and BI. During our March meeting, we will also talk about the upcoming elections to the chapter board of directors. I would encourage you to think how you can contribute to the strength of your own profession. Hint: how about giving a hand to the professional organization that organizes those meetings for you?

After the elections, we will have our membership drive to gather new members as well as renewals. You can see we have already speakers and presentations scheduled up to July. All in all, that's already half of year planned ahead. But we want to make sure the presentations we arrange for you are on topics you are interested in. We rely on your suggestions.

See you on the 10th.

François Cartier
President, SF DAMA



SF DAMA Meetings Schedule
(All meetings start at 8:30 a.m. and are at the following location unless otherwise noted.)


Chris Date
January 10, 2007 AT&T, 2600 Camino Ramon, San Ramon

"The Closed World Assumption"

Chris Date Abstract Page

Door Fee: $20 - Pre-Register with PayPal

Please RSVP to Manickam.Raj@gene.com


Jeff Pekrul
February 7, 2007 Genentech, 611 Gateway Blvd. South San Francisco, CA 94080
"Designing Canonicals for SOA: Bridging ER and XML Worlds"



SF-DAMA Communications Blog

Announcements, Conferences, Seminars, and more. See what's happening ...


 


Program Director's Message:

New technologies bring new opportunities, not just to developers, but also to those of us in the data management profession. Over the past decade, many traditional data management organizations became smaller in size and budget as development groups grow larger. While it is true that attention to web pages, eCommerce, ERP/packaged applications, and Java lead to an increased shift towards developers, I feel a broader reason is because data professionals do not track technology developments the way other technologists do. As a result many of us loose valuable opportunities.

My article Leveraging Technology to Reestablish Data Management published in TDAN in October 2006 explores this topic. Also as you can see in the SF DAMA Chapter's Communications Blog the desire to keep data management professionals up on trends in technology has strongly influenced this year's program offerings.

Mehmet Orun
SF DAMA Program Director
Principal Architect for Data Services (Genentech)



CHRIS DATE - January 10, 2007

Click for Directions to AT&T in San Ramon
Please RSVP to Manickam.Raj@gene.com

8:30 - 9:00 Continental Breakfast
9:00 - 9:15 Welcoming Remarks
9:15 - 10:15 The Closed World Assumption by Chris Date
10:15 - 10:30 Break
10:30 - 11:45 Continued Presentation
11:45 - 12:00 Questions and Wrap-Up
12:00 - Lunch Restaurant (to be announced at the meeting)

January 10, 2007
Chris Date - The Closed World Assumption - Click to Register

ATT San Ramon Facility
2600 Camino Ramon
San Ramon, CA 94583
8:30am - Noon



Abstract: The Closed World Assumption
The Closed World Assumption (CWA) is an important concept in the database world, despite the fact that it isn’t usually spelled out explicitly. Basically what it says is this: Everything stated by the database, either explicitly or implicitly, is true; everything else is false. This presentation explains the CWA in detail and shows why it’s preferred over its rival, the Open World Assumption (OWA). In particular, it examines the claims that are sometimes heard to the effect that the database community operates under the CWA while the semantic web community operates under the OWA. It also explains how "missing information" can be handled under the CWA without any need for nulls or three-valued logic.

Topic Outline

Background review
Relvar predicates and constraints
The CWA and OWA defined
Relvar predicates revisited
Unknown and uncertain information
Negation and disjunction

Chris Date - Biographical Information
C. J. Date is an independent author, lecturer, researcher, and consultant, specializing in relational database technology (a field he helped pioneer). Before leaving IBM in 1983, he was involved in technical planning and design for the IBM products SQL/DS and DB2. His book An Introduction to Database Systems (2004), 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.

He is also the author of many other books on database management, including in particular Database, Types, and the Relational Model: The Third Manifesto (Addison-Wesley, 3rd edition, with Hugh Darwen), Temporal Data and the Relational Model (2003, with Hugh Darwen and Nikos A. Lorentzos), The Relational Database Dictionary (O’Reilly, 2006), and Date on Database: Writings 2000-2006 (Apress, 2006). He enjoys a reputation second to none for his ability to explain the complexities of database technology in a clear and simple fashion, both on paper and in live presentations.




Jeff Pekrul - February 7, 2007

Click for Directions to Genentech in South San Francisco

8:30 - 9:00 Continental Breakfast
9:00 - 9:15 Welcoming Remarks
9:15 - 10:15 Designing Canonicals for SOA: Bridging ER and XML Worlds
10:15 - 10:30 Break
10:30 - 11:45 Continued Presentation
11:45 - 12:00 Questions and Wrap-Up
12:00 - Lunch Restaurant (to be announced at the meeting)

February 7, 2007
Jeff Pekrul, Data Architect, Genentech Inc.
Designing Canonicals for SOA: Bridging ER and XML Worlds If logical data models reflect the business view, one can think that they would be a strong basis for defining canonical structures to enable service oriented architecture, application agnostic archiving, etc. The challenge lies defining structures that can be implemented in the 'real world', with master data management repositories, inconsistent reference data across applications, and groups that may not agree with names and definitions. This session will be based on actual lessons learnt in seeking to tackle the above, what worked, what did not work, how one can go from an ER model (which is a bidirectional graph) to one or more XML schema structures depending on the technical/business need. Presenter: Jeff Pekrul, Data Architect, Genentech Inc. Jeff Pekrul is a data architect in the Business Solutions Engineering group at Genentech, responsible for canonical model development, and support of data integration projects that use EII technology. Prior to Genentech, Jeff worked as a data modeler/data architect at Charles Schwab, Harmony Software and AT&T. Jeff has modeled databases in support of customer-facing applications in several industries, and has experience with data warehouse modeling as well. Jeff has an MS in Information Systems Management, and is a member of the San Francisco chapter of DAMA.



Data Management Association, Inc., San Francisco Bay Area Chapter
268 Bush Street, Suite 2523, San Francisco, CA 94104
www.sfdama.org.
Please contact Wendy to be removed from distribution.