A.1 World Wide Web

The following web sites are the primary sources for the UML standard:

http://www.omg.org and http://www.omg.org/uml: The Object Management Group (OMG)
http://www.rational.com and http://www.rational.com/uml: Rational Software Corporation

The following web sites offer other worthwhile information regarding the OCL, the next major revision of the UML, and a virtual community:

http://www.klasse.nl/ocl/index.html: The Object Constraint Language (OCL).
http://www.u2-partners.org: The U2 Partners are focusing on the next major revision of the UML.
http://www.uml-forum.com: The UML Forum is a virtual community concerning the UML.

The following web sites offer other worthwhile information regarding improving the UML:

The following web sites offer other worthwhile information and links:

http://home.earthlink.net/~salhir: Sinan Si Alhir's personal web site.
http://www.cetus-links.org: The Cetus Team offers significant information regarding UML tools, methodologies, processes, and much more.