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DoD Per Diem Rates with XML Schema

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DoD Per Diem Rates with XML Schema

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    1. DoD Per Diem Rates with XML Schema

    2. Demo Goals Convert ASCII files to XML instances Generate XML Schema based on one instance Refine XML Schema by adding types Validate instances against XML Schema Use XSLT to convert XML to HTML for display (server-side and client-side)

    3. DoD Per Diem Rates Tables Available as semi-colon delimited ASCII files Connow.txt - Includes Military Installations; 1136 entries Conusnm.txt - No Military Installations; 690 entries Conusmil.txt - Military Installations only; 446 entries

    4. Semi-Colon Delimited ASCII

    5. Convert ASCII Files to XML Instances XML Spy reads delimited files and lets you assign element names

    7. Generate XML Schema Based on single XML instance Uses enumerations to constrain numbers Other two instances fail to validate with this generated schema Could prevent the enumerated constraints

    12. Refine XML Schema Consider all 3 XML instances, looking at range of data Define data types Date formats (not same as xsd:date) Restricted integer ranges Discovered 4 irregularities in per diem data 3 counties missing (one file had delimiters, one did not) 1 rate (out of 1136 times 4) contained decimal value; all others were integers

    14. Irregular Data – Missing County

    15. Use XSLT to Display as HTML

    16. XSLT with Sort by Rate

    17. Next Steps [Pending GSA Direction] Contact DoD about data irregularities Make element names ISO/IEC 11179-compliant Contribute to Registry Consider creating Web services to Retrieve entire table Retrieve one entry based on location

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