從DTDs轉換到XML Schemas時(shí)元素和屬性的變化
| 從DTDs轉換到XML Schemas時(shí)元素和屬性的變化 |
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| DTD | XML Schema |
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<!ELEMENT ROOT (A,B) > | <element name="ROOT"> <complexType content="elementOnly"> <element ref="t:A"> <element ref="t:B"> </complexType><element> | <!ELEMENT ROOT (A|B) > | <element name="ROOT"> <complexType content="elementOnly"> <choice> <element ref="t:A"> <element ref="t:B"> </choice> </complexType><element> | <!ELEMENT ROOT (A|(B,C)) > | <element name="ROOT"> <complexType content="elementOnly"> <choice> <element ref="t:A"> <sequence> <element ref="t:B"> <element ref="t:C"> </sequence> </choice> </complexType><element> | <!ELEMENT ROOT (A?,B+,C*) > | <element name="ROOT"> <complexType content="elementOnly"> <element ref="t:A" minOccurs="0"> <element ref="t:B" maxOccurs="unbounded"> <element ref="t:C" minOccurs="0" maxOccurs="unbounded"> </complexType><element> |
| DTD | XML Schema |
|---|
<!ATTLIST ROOT a CDATA #REQUIRED> | <element name="ROOT"> <complexType content="elementOnly"> <attribute name="a" type="string" use="required"/> </complexType><element> | <!ATTLIST ROOT a CDATA #IMPLIED> | <element name="ROOT"> <complexType content="elementOnly"> <attribute name="a" type="string" use="optional"/> </complexType><element> | <!ATTLIST ROOT a (x|y|z) #REQUIRED;> | <element name="ROOT"> <complexType content="elementOnly"> <attribute name="a"> <simpleType base="string"> <enumeration value="x"/> <enumeration value="y"/> <enumeration value="z"/> </simpleType> </attribute> </complexType><element> | <!ATTLIST ROOT a CDATA #FIXED "x"> | <element name="ROOT"> <complexType content="elementOnly"> <attribute name="a" type="string" use="fixed" value="x"/> </complexType><element> |
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