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RDBMS 101 - Relational Set Operators

Busy with DBMS implementation and management studies I stumbled across the following statement " To be considered minimally relational, the DBMS must support the key relational operators SELECT, PRODUCT and JOIN ". Although there are eight (8) documented relational operators, only a few database...

Posted to Willy-Peter Schaub's Cave of Chamomile Simplicity (Weblog) by willy on 10-09-2008
Have you also forgotten the SUBST command by any chance?

I have been busy debugging and implementing workarounds for a toothache I experienced with Visual Studio and had to create a few directories on the D drive ... which I do not have on my laptop. Being pragmatic, I attached my external drive and created the directories ... fortunately Philip Kelley dusted...

Posted to Willy-Peter Schaub's Cave of Chamomile Simplicity (Weblog) by willy on 10-07-2008
.NET Enterprise Books for the Connoisseur ... all available in PDF!

We have just released the PDF, soft copy, eBook style books for the following three books on www.drp.co.za and www.saarchitect.net . On the later server find the books here and remember that www.drp.co.za is geared at American region and www.saarchitect.net for the MEA region. .NET Enterprise Solutions...

Posted to Willy-Peter Schaub's Cave of Chamomile Simplicity (Weblog) by willy on 10-01-2008
South-African IT Community servers ... stats to be proud of!

A colleague asked me today for some stats on quick reference poster hits and downloads. Well after looking at the two community servers we are responsible for, namely www.saarchitect.net and www.drp.co.za , I found that the statistics are actually very promising. So much so, that I am posting some of...

Posted to Willy-Peter Schaub's Cave of Chamomile Simplicity (Weblog) by willy on 09-30-2008
Webcast: Using Scrum with Visual Studio Team System

Mike Azocar (one of the authors of the VSTS Lightweight Scrum template) will be presenting: Scrum-tastic Development with Visual Studio Team System and Light Weight Scrum Thursday, September 25 th , 2008 | 9:00am – 10:00am (PDT, Redmond time) https://www.livemeeting.com/cc/mvp/join?id=NR4H9T&role...

Posted to Willy-Peter Schaub's Cave of Chamomile Simplicity (Weblog) by willy on 09-25-2008
To Scrum or not to scrum ... some of "my" views

Continued from http://dotnet.org.za/willy/archive/2008/09/12/scrum-atc-has-its-very-own-certified-scrum-master.aspx . What makes scrum different from the classic waterfall model ... "my" views range from nothing to lots! Why nothing? From a specific altitude both have a beginning and an end...

Posted to Willy-Peter Schaub's Cave of Chamomile Simplicity (Weblog) by willy on 09-15-2008
An introduction to BizTalk 2006 by the ATC Collective ... Day 8b of many BizTalk Fridays (BAM)

This is a continuation from http://dotnet.org.za/willy/archive/2008/09/11/an-introduction-to-biztalk-2006-by-the-atc-collective-day-8a-of-many-biztalk-fridays-business-rules-within-orchestrations.aspx and is the last post in this series, sharing our experiences during the journeys through the BizTalk...

Posted to Willy-Peter Schaub's Cave of Chamomile Simplicity (Weblog) by willy on 09-12-2008
An introduction to BizTalk 2006 by the ATC Collective ... Day 8a of many BizTalk Fridays (Business Rules within orchestrations)

This is a continuation from http://dotnet.org.za/willy/archive/2008/09/08/an-introduction-to-biztalk-2006-by-the-atc-collective-day-7b-of-many-biztalk-fridays-web-services.aspx and focuses on the highly complex environment ... complex?!? ... of integrating business processes with orchestrations. We covered...

Posted to Willy-Peter Schaub's Cave of Chamomile Simplicity (Weblog) by willy on 09-11-2008
An introduction to BizTalk 2006 by the ATC Collective ... Day 7b of many BizTalk Fridays (Web Services)

Continued from Friday morning at http://dotnet.org.za/willy/archive/2008/09/05/an-introduction-to-biztalk-2006-by-the-atc-collective-day-7a-of-many-biztalk-fridays-transactions.aspx . Sorry for the delayed post of this one ... Friday afternoon and evening turned into a hectic time zone and the blog post...

Posted to Willy-Peter Schaub's Cave of Chamomile Simplicity (Weblog) by willy on 09-08-2008
An introduction to BizTalk 2006 by the ATC Collective ... Day 7a of many BizTalk Fridays (Transactions)

Continued from last week at http://dotnet.org.za/willy/archive/2008/08/29/an-introduction-to-biztalk-2006-by-the-atc-collective-day-6b-of-many-biztalk-fridays-orchestrations.aspx . My colleague Ryan , the SA Biztalk Guru, requested that we mention persistence points ... Ryan, I hope today's note...

Posted to Willy-Peter Schaub's Cave of Chamomile Simplicity (Weblog) by willy on 09-05-2008

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