XML and Complex Systems (1998)

www.gollner.ca XML or “I’ve got apiece of Datalodged in my Web” Joe Gollner, M.Phil. Delivered 1998 to the Microsoft Users Group

Topics• XML Concepts• XML and the Internet• Back to the Future• Killer Apps • Power Web Publishing • Software Design and Maintenance• The Future

A subset of SGMLWhat is XML? optimized for use on the web - MicrosoftThe Extensible Markup Language is theuniversal format for data on the web - Microsoft

What about HTML?? HTML is for viewing data XML is for working with data Microsoft

Why is XML Hot Now? (SGML has been around forever)• The Internet has changed everything • There are no closed systems now • Systems must work on diverse and changing platforms• Data and behaviour must cross boundaries intact• Microsoft is among the first to really see this

The Evolution of the Web It’s not just for documents anymore• Web Technology was designed for Pages • Simple, pre-determined formatting • Static views of information• But the Web can be more... • A shared application domain • A data interchange medium • A window onto continuously integrated information

What has been missing?• A platform-independent format for data• An intelligent data format that • offers more than simple formatting • supports advanced processing• A format that can describe: • Data constraints • Complex relationships • Application behaviour

We’ve been Data fordown this Complexroad before Systems

The Challenge: Integrating vast amounts of complex data...from different sources

And there’s more...Groups ofComplexSystems...must be able to inter-operate

and... new technologies are constantly introduced X-33

and...The newand the oldmust worktogether …in new environments

...and there is alwaysConfigurationManagement No two instances of a system will be the same

The Role of SGML• Under the Defense CALS initiative (1985): • SGML became the key tool for integrating complex data sources• SGML offered: • Platform-independence • Intelligent processibility• The Vision (Holy Grail): • Massively integrated shared data environments

SGML in Defense Technical DocumentationReducing theLifecycle Costof Complex Systems

On Demand Printing Sub- SquadronsContractor Prime Equipment Contractor Management Team The Integrated Data Environment

Effective dataintegration makescomplex systems possible

So what does thishave to do with the Internet?

The Evolution of the Web A Platform for Complex Systems• It is time to go beyond Pages• It is time to build complex, Inter-enterprise systems• A few new applications • Power Web Publishing • Software Design and Maintenance

Power Web PublishingA Three Tier Architecture Microsoft Web Site

Everyday Complex Systems Software Design and Maintenance• Current Software Systems are • error-prone • susceptible to decay • Entropy • Corrosion • “Barniclization”• XML enables a new model

XML and Software Design• XML enables: • Object Orientation at the system level • platform-independent message interfaces • behaviour modulization • critical for maintenance • critical for multi-platform installation • behaviour abstraction • critical for language independence

XML is the missing ingredient in the Fractal Enterprise [www.gollner.ca]

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XML and Complex Systems (1998)

by Joe Gollner on Mar 06, 2011

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XML and Complex Systems (1998) — Presentation Transcript