Re: Elements with explicit behavior versus elements that contain data used to produce behavior

XML is a data language (without semantic)
XSL is a programming language (with semantic defined)
-- 
Kit



Dne út 7. 2. 2023 18:59 uživatel Roger L Costello <[email protected]>
napsal:

> Hi Folks,
>
> Consider this XML element:
>
> <xsl:value-of select="/BookStore/Book[1]/Title"/>
>
> That is an element (value-of) and the element has an attribute (select).
> That element means something. It has a specific behavior. Namely, it
> returns the value of the element identified by the XPath expression
> (/BookStore/Book[1]/Title). Conceivably there could be a computer whose
> hardware directly operates on this XML element.
>
> Next, consider this XML element:
>
> <airport>
>     <name>Logan Airport</name>
>     <instrument-departure>
>         ...
>     </instrument-departure>
> </airport>
>
> That element (airport) does not have a behavior. But the data in that
> element is ingested into an aircraft's flight management system (FMS) and
> then used to fly an aircraft out of the airport.
>
> In the first case the element has explicitly defined behavior whereas in
> the second case the element has data that is ingested by an application to
> produce a behavior.
>
> The distinction is somewhat subtle, but important I think.
>
> I would like to hear your thoughts on this. Is the distinction useful?
>
> /Roger
>
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