Re: [xml-dev] How to represent a "cost" in XML?

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</SomeSortOfDataSet>

For example Abc might be the payment cost and Xyz and Zyx might be card payment cost and cash payment cost respectively both of which must be made in USD.

Regards

Stephen D Green

On Thursday, 27 September 2018, Stephen D Green <stephengreenubl@gmail.com> wrote:

Another XML representation based on typical data designs in financial systems is

<SomeSortOfDataSet>
...
<XyzAmount>123.45</XyzAmount>
...
<XyzCurrencyCode>USD</XyzCurrencyCode>
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</SomeSortOfDataSet>

This has the advantage that the amount and currency can be positioned at different places in the data or document.

Regards
Stephen D Green

On Wednesday, 26 September 2018, Costello, Roger L. <costello@mitre.org> wrote:

Hi Folks,

I would like to represent in XML the cost of something.

Here’s one way to represent it:

<Cost currency="USD">8.95</Cost>

If you didn’t want to use attributes (or mixed content), how would you represent it?

Would you represent it like this:

<Cost>
    <Currency>USD</Currency>
    <Value>8.95</Value>
</Cost>

I do not like that representation because it introduces a fake <Value> element.

Perhaps you would represent it by turning things inside out:

<Value>
    <Currency>USD</Currency>
    <Cost>8.95</Cost>
</Value>

I’m not sure I even know what that means.

Sigh.

Any economists out there? Please do tell: what is “cost”?

Cost seems to have (at least) two components: a number and an indication of what system of money the number is based on. The “system of money” is the currency. What about the number; what is it? What label do you give to the number? When you talk about the number, what words do you use?

/Roger

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Stephen D Green