Monday, October 18, 2010

Extensible Markup Language (XML)

XML- Extensible Markup Language

- was designed to describe data and focus what data is.
- XML's design goals emphasize simplicity, generality, and usability over the internet.
- Although the design of XML focuses on documents, it is widely used for the representation of arbitrary data structures, for example in web services.
- is a markup language much like HTML.
- tags are not predefined.

1) XML syntax

2) XML tree

3) XML table

Computational method:

MethodMolecular mechanicsSemi empiricalAb initio
SpeedVery fast speedFast speedSlow speed
AccuracyParameter restrictionGood accuracyVery good accuracy

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