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[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] [OT] Difference between an extensible versus an evolvable information s
 Hi
Folks,
I am interested in
hearing your thoughts on the differences between an information system that is
extensible versus an information system that is evolvable.
For example, suppose
that Amazon.com gives users the ability to do a keyword search.
Further, suppose that Amazon empowers its users to create new keywords (and map
the new keywords to information at the Web site). Is this support for new
keywords an example of extensibility or evolution? By adding new keywords
has Amazon merely been extended, or
has it evolved?
Let's take another example. Suppose that Amazon
gives users the ability to search by book category (e.g., Fiction, Non-Fiction,
etc.) Further, suppose that Amazon empowers its users to create new
categories (and map the categories to information at the Web site). Is
this support for new categories an example of extensibility or evolution?
By adding new categories has Amazon merely been extended, or has it
evolved?
If adding new keywords and adding new
categories are merely examples of extension, then can you give an example
of evolution?
/Roger 
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