From: Jurgen Vinju
To: Multiple recipients of list PEM <>
Date: Wed, 1 May 2002 13:07:24 +0200
Subject: PEM |  2.05.02 | M279

Precedence: bulk
X-url: http://www.cwi.nl/~jurgenv/pem/nextpems.html

Mime-Version: 1.0
Content-Type: text/plain

   Dear colleagues,

   Join   us  tomorrow  for  another  interesting  meeting.  This  week's
   presentation   addresses  a  specific  everyday  software  engineering
   problem.

   This announcement can be found at
   <http://www.cwi.nl/~jurgenv/pem/nextpems.html>

               Object Relational Mappings, JDO vs. WebObjects

   Date:     2.05.02
   Time:    10:00
   Venue:   M279
   Speaker: Ernst-Jan Verhoeven and Alex van den Bergh
   Title:   Object Relational Mappings, JDO vs. WebObjects

   Today's  business  applications  must  embody  complex  rules  of  the
   business,  access  heterogeneous  data  in  database systems and offer
   different front ends to meet the needs of users.

   Relational  databases are fast, scalable, structured, well known, well
   understood  and  are...  well...  great  for  storing  lots  of  data.
   Object-oriented  programming  languages  and  frameworks  are flexible
   and... well... great for describing the rules of the application.

   One  of  the  most  significant  problems  developers  face when using
   object-oriented programming languages with relational databases is the
   difficulty  of  matching  static, two-dimensional data structures with
   the extensive flexibility offered by objects.

   We will be talking about ways to deal with so called Object-Relational
   Mapping  (ORM) focussing on Sun's Java Data Object specification (JDO)
   en Apple's (Next's) WebObjects Enterprise Object Framework (EOF).

   Have a nice day.
     _________________________________________________________________

   The  programming environment meetings are a forum for the presentation
   and  discussion  of  new  ideas,  ongoing and finished work. A typical
   meeting  addresses  a subject in the area of programming environments,
   program  generation, algebraic specification, term rewriting, parsing,
   etc.  A presentation ideally takes between 45 and 90 minutes. Meetings
   taking  longer  than 45 minutes are interrupted by a coffeebreak. Most
   Thursdays,  a  meeting is held which starts at 10:00 am. in one of the
   rooms at CWI/WINS. Exceptionally, dates or times may change.

   The    program    of    the    meetings    is    available   on   WWW:
   http://www.cwi.nl/~jurgenv/pem/index.html
     _________________________________________________________________