Question

DTD for multiple instances of element

Asked by: greta13

Need help getting my DTD to Validate for multiple instances of the Track number in a cd.xml description.  I can get it to validate for one instance of the track but when i add tracks to xml i cannot configure the dtd to validate see code
thanks

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Asked On
2009-11-02 at 20:14:05ID24866105
Topic

Extensible Markup Language (XML)

Participating Experts
1
Points
500
Comments
8

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    Answers

     

    by: greta13Posted on 2009-11-02 at 22:28:09ID: 25726462

    I just figured it out ...thanks

     

    by: GertonePosted on 2009-11-03 at 09:21:06ID: 25731220

    You are giving mixed messages here.
    It seems you "figured it out"
    but I just get an extra call for attention, a

    Anyway, maybe I have some advice, I would definitely share

    It usually is not a good idea to name your sequence of traks with different names
    <tracknumber1...
    <tracknumber2...
    this is limiting, makes your schema unnecesarily complex and makes writing the XML tyring.
    I recommend that you use this style, using attributes
    <track number="1">...
    unless you really need to validate the sequence using a DTD
    (you could always check whether the numbering is right using schematron in a second validation step), www.Schematron.com

    secondly you can only force fixed text enumerations in an attribute, not in an element (at least not with DTD, you can, with w3c schema)
    I recommend an attribute here as well
    <price available="in_stock">$10.99</price>

    I have attached a new proposal for your DTD
    the original question: use a + as occurence indicator on track

    <!ELEMENT cdline (title, artist, price, track+ )>
<!ELEMENT title (#PCDATA)>
<!ELEMENT artist (#PCDATA)>
<!ELEMENT price (#PCDATA)*>
<!ATTLIST price available (in_stock|not_in_stock) #IMPLIED >
<!ELEMENT track (song_title, time)>
<!ATTLIST track number CDATA #IMPLIED>
<!ELEMENT song_title (#PCDATA)>
<!ELEMENT time (#PCDATA)>

                                              
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    by: greta13Posted on 2009-11-03 at 12:51:51ID: 25733460

    Thank you Gertone...

     

    by: GertonePosted on 2009-11-03 at 13:08:01ID: 25733660

    welcome

     

    by: GertonePosted on 2009-12-11 at 01:43:12ID: 26026663

    I would accept ID:25731220,
    given the "thank you", no?

    20120131-EE-VQP-002

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