| Document Type
Definitions |
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| • | A DTD describes
the tree structure of a |
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| document and
something about its data. |
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| • | There are two
data types, PCDATA and |
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| CDATA. |
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| – | PCDATA is parsed
character data. |
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| – | CDATA is
character data, not usually parsed. |
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| • | A DTD determines
how many times a |
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| node may appear,
and how child nodes |
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| are ordered. |
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