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Why is XML so adaptable?

If XML is a new generation, then SGML is its mother.  SGML stands for the Standard Generalized Markup Language, which was actually conceived in the 60’s and 70’s.  SGML is likely one of the most adaptable languages of all time, allowing the use of constructs that even XML won’t allow.  Unfortunately, SGML is more complex and not as universally supported as XML, so the use of SGML instead of XML isn’t really recommended.

XML has inherited many of the key features of SGML, however, and puts them to good use; in many cases, the ways that it differs from its predecessor is pretty much inconsequential.  While you may occasionally run across strange circumstances that would work out better with SGML, it’s best to focus on XML since that’s where most of the support and interest lies.

Ok, so what can I use XML for?

It might be a bit easier to list what you can’t use it for!  In addition to making simple web pages about your cats, you can use XML to create more complex applications such as online databases, custom-built pages, and more.  By combining XML with Style Sheets and dynamic elements, you can even create a storefront for online shopping!  The possibilities are nearly endless.

Of course, by adding Web Services into the mix, things become even more interesting…