Figure 2.1: The general problem—islands of technology without ubiquitous intercommunication. Figure 2.2




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Ceponkus, Hoodbhoy - Applied XML - Toolkit for Programmers

Figure 2.1:
The general problem—islands of technology without ubiquitous
intercommunication.
Figure 2.2:
The general solution—use XML as a communication language for 
exchanging information between the islands.


- 23 -
One reason we cannot do it is because of the nonubiquitous representation of data. Let’s 
face it, at just about every level, human communication is flawed. We are rarely able to 
say things in a way that always appeals to everyone and certainly not in a way that 
everyone will accept. Some of it has to do with language differences, cultural differences, 
our perceptions, or our current mind-set. The same rationale applies to the information 
technology world. Although we have a digital format for digitizing and representing nearly 
every form of data, no universal convention exists. While the Internet certainly is a 
universal information transmission media, it is not yet a ubiquitous 
communication
media, 
that is, it does not provide a universal language that all users (clients) are able to 
process.
The net result is that we have created many isolated pockets of technology. Although it 
may be safe to say that all of these pockets conceivably hold keys to communication
none of them provides a complete solution that is ubiquitously usable. How many times 
have you had problems working with files in different formats, say opening Microsoft 
Word documents on a Unix machine or processing information started in Oracle 
database in a complicated CAD package or simulation model? Similarly, why isn’t it 
possible to convert all your accounting information from Excel, Quicken, or Microsoft 
Money into line items for calculating the taxes you owe the IRS (with automated reflection 
of updated rules) and then file that over the Internet? Sure, there are ways to get around 
these problems (usually involving a lot of manual “cut and paste” operations), but rarely is 
there a complete solution. Any solution almost always involves of large degree of 
customization and human interaction and is thus, inherently piecemeal at best. (We’re not 
trying to knock humans here—we think humans are great—however, we believe they 
really ought to be doing more useful work than cutting and pasting.)
This is not a new problem; engineers and computer scientists have been aware of this for 
several decades. The extremely popular solution was—and persists as—“Live with it.” 
When HTML came along, it was not as significant a technological leap as it was a leap in 
the standardization of technology. It provided a standard way for 
displaying
information 
on virtually any computer—one where no private licensing was required nor any royalties 
due. XML, as a solution, is not so much a technological breakthrough, again, as it is a 
standardization of technology 
breakthrough.

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Figure 2.1: The general problem—islands of technology without ubiquitous intercommunication. Figure 2.2

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