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Components are "packaging" for
objects. Components represent the "contract" that must be
maintained. These packaged pieces of software seem to have their
greatest use in the middle tier implementing business logic. In our
view, there are two viable technologies for components, Com/Dcom and EJB
which we present links for below. We do not believe that CORBA at the
current time has a very good offering. Perhaps this will change with the
ongoing work for CORBA 3.0.
UML
This standard is one that is crucial to the creation of components.
We believe the real use of this standard will be not in the creation of
components, but in their maintenance. One of the major benefits of using
this standard is that a common vocabulary is provided for talking about
the components between developers, marketing, and sales.
Web Sites
|
Second
International Conference on the
Unified Modeling Language
Home page for UML'99, a conference bringing together researchers
in academia and industry who are dealing with UML. October
28–30, 1999, at Fort Collins, Colorado, USA. |
Object
News
Interested in the current state of affairs in objects, components,
and event UML? Check out this directory of links. |
Cetus
Links to UML
Articles, Links, Mailing lists, they are all here. Make sure to
stop here on your tour of web sites that pertain to UML. |
UML
Modeling Language Dictionary
Too many terms in UML. Check this on-line dictionary out to figure
out what they all mean. |
UML
Center
What does Computer Associates have to say about UML. Quite a bit.
This site is definitely worth a visit. |
XML
Metatdata Interchange Format (XIF)
If you want to exchange UML between different tool vendors, this
standard is a start. |
Rational
Software UML Resource Center
Where did UML really start? From Rational. Check out this site of
their documentation and keep in that their products are greatly
benefited from UML. |
UML
Revision Task Force
What's happening in the next version of UML. Find out here to find
artifacts, issues, and workgroups. |
The
Precise UML Group
If you think that UML is not precise enough in it's semantics,
check this group out as they are doing something about it. |
Object
Constraint Language
Get the straight story on OCL in UML 1.1 from IBM, where it
originated. |
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Com/DCom
This component technology is being advanced by Microsoft and is the
most prolific and stable way of creating components. It has the drawback
of being limited to Microsoft operating systems (NT, 98, 95). Microsoft
seems to basing it's entire middle tier strategy (currently known as
COM+, which includes MTS, MSQ, and DTC) on Com/Dcom.
Web Sites
|
Microsoft
COM Technologies
Case studies, white papers, discussions of technologies leave
you with the view that Microsoft has not articulated a good middle
tier strategy, but they have an excellent component offering. |
COM+
Here is Microsoft's articulation of what COM+ is, including white
papers, resources, and press releases. |
Microsoft
Transaction Server
Code named "Viper", here is Microsoft's TP monitor.
According to TPC-C numbers, it's already equivalent to Tuxedo in
performance. |
ObjectWatch
Home Page
Wondering how this stuff all ties together? Check out the
newsletters and courses here. Good explanations. |
Develop
Mentor
Do you want to immerse yourself in an excellent programming
course for COM and DCOM? Check out Guerilla COM. |
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EJB
Sun is extending the Java language to work as components in the
middle tier by the EJB technology. Currently, the greatest limitation
seems to be that if you adopt this technology, you must use Java.
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