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<DIV class=pt10><B>3.1.3.5 枚舉類型</B></DIV>
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<P>屬性也可以被描述為一組可接受的取值的列表，XML文件中對屬性的賦值將從這個列表中選取一個值。這類屬性屬于枚舉類型ENUMERATED，不過，關鍵字ENUMERATED是不出現在DTD定義中的。</P>
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<TD width="100%"><?xml version = "1.0"
<BR> encoding="GB2312"
<BR> standalone =
"yes"?><BR><!DOCTYPE 購物籃 [<BR> <!ELEMENT
購物籃 ANY><BR> <!ELEMENT 肉
EMPTY><BR> <!ATTLIST 肉 類型( 雞肉 | 牛肉 | 豬肉 | 魚肉
) "雞肉"><BR> ]>
<P><購物籃><BR> <肉 類型 =
"魚肉"/><BR> <肉 類型 =
"牛肉"/><BR>
<肉/><BR></購物籃></P></TD></TR></TBODY></TABLE></CENTER></DIV>
<P>注意，在上面這個例子中，給屬性“類型”定義的缺省值是“雞肉”，所以“購物籃”中的第三個元素的“類型”屬性取值為“雞肉”。</P></DIV>
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