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Presenting XML.rar,详细介绍有关XML的知识

<P>Summary     64
</P>




<P><B>Part II     XML in Detail     65</B>
</P>




<P>     5     The XML Approach     67
</P>




<P>XML's Main Objectives     68
</P>



<BLOCKQUOTE>
<P>Generic SGML     68
</P>




<P>Interoperability with SGML     69
</P>




<P>Interoperability with HTML     70
</P>
</BLOCKQUOTE>



<P>Design Goals     70
</P>



<BLOCKQUOTE>
<P>1: XML Shall Be Straightforwardly Usable <BR>
Over the Internet     70
</P>




<P>2: XML Shall Support a Wide Variety of Applications     71
</P>




<P>3: XML Shall Be Compatible with SGML     71
</P>




<P>4: It Shall Be Easy to Write Programs that Process
XML Documents     72
</P>




<P>5: The Number of Optional Features in XML <BR>
Is to Be Kept to the Absolute Minimum, <BR>
Ideally Zero     72
</P>




<P>6: XML Documents Should Be Human-Legible and <BR>
Reasonably Clear     73
</P>




<P>7: The XML Design Should Be Prepared Quickly     73
</P>




<P>8: The Design of XML Shall Be Formal and Concise     74
</P>




<P>9: XML Documents Shall Be Easy to Create     74
</P>




<P>10: Terseness in XML Markup Is of Minimal Importance     74
</P>
</BLOCKQUOTE>



<P>Representation of Characters in XML     75
</P>




<P>Primitive Constructs     76
</P>




<P>Character Data and Markup     77
</P>




<P>CDATA Sections     78
</P>




<P>White Space Handling     79
</P>




<P>Comments     81
</P>




<P>Processing Instructions     81
</P>




<P>Logical and Physical Structure     82
</P>




<P>Summary     83
</P>

<A NAME="PAGENUM-12"><P>Page 12</P></A>


<P>
 6     Logical Structures in XML Documents     85
</P>




<P>XML Documents     85
</P>



<BLOCKQUOTE>
<P>XML Declaration     86
</P>




<P>Document Type Declaration     87
</P>




<P>The Document Element     88
</P>
</BLOCKQUOTE>



<P>Well-Formed and Valid Documents     88
</P>



<BLOCKQUOTE>
<P>Well-Formed Documents     88
</P>




<P>Valid Documents     89
</P>
</BLOCKQUOTE>



<P>Elements     90
</P>



<BLOCKQUOTE>
<P>Elements in HTML     90
</P>




<P>XML Elements: The Suitcase Model     91
</P>
</BLOCKQUOTE>



<P>Attributes: The Luggage Label     93
</P>



<BLOCKQUOTE>
<P>Attribute Specifications     93
</P>




<P>Attribute-List Declarations     94
</P>




<P>Attribute Types     95
</P>




<P>Mandatory Attributes     96
</P>




<P>Default and Fixed Values     96
</P>
</BLOCKQUOTE>



<P>Content: What's In the Suitcase     97
</P>



<BLOCKQUOTE>
<P>Data Content     97
</P>




<P>Element Content     97
</P>




<P>Mixed Content     97
</P>




<P>Content Models     98
</P>




<P>Mixed-Content Declarations     99
</P>
</BLOCKQUOTE>



<P>Cross-References and Links     100
</P>



<BLOCKQUOTE>
<P>Internal Cross-References     100
</P>




<P>External Linking     101
</P>
</BLOCKQUOTE>



<P>Groves     102
</P>



<BLOCKQUOTE>
<P>Classes and Properties     103
</P>




<P>Nodes and Nodelists     104
</P>




<P>Grove Plans     105
</P>
</BLOCKQUOTE>



<P>Summary     106
</P>




<P>     7     Physical Structures  in XML Documents     109
</P>




<P>Internal and External Entities     110
</P>




<P>Text and Binary Entities     110
</P>




<P>Entity References     111
</P>




<P>Parameter Entity References     112
</P>




<P>Uses for Entities     113
</P>



<BLOCKQUOTE>
<P>Non-Standard Characters     113
</P>




<P>Frequently Used Phrases     114
</P>
</BLOCKQUOTE>


<A NAME="PAGENUM-13"><P>Page 13</P></A>

<BLOCKQUOTE>
<P>
Chunks of Markup     114
</P>




<P>Sections of Documents     115
</P>




<P>Organizing Your DTD     115
</P>




<P>Non-XML Resources     116
</P>
</BLOCKQUOTE>



<P>Storage Strategies for XML Entities     116
</P>




<P>Synchronicity of Logical and Physical Structures     117
</P>


<BLOCKQUOTE>
<P>What's Allowed in a Logical Structure?     117
</P>




<P>What's Allowed in a Physical Structure?     118
</P>
</BLOCKQUOTE>



<P>Predefined Entities     118
</P>




<P>Character References     118
</P>




<P>Character Encoding in XML Text Entities     119
</P>




<P>Summary     121
</P>




<P>     8     Keeping It Tidy: The XML Rule Book     123
</P>


<P>The XML Prolog     123
</P>



<BLOCKQUOTE>
<P>The XML Declaration     124
</P>




<P>The Document Type Declaration     124
</P>




<P>Comments     124
</P>




<P>Processing Instructions     125
</P>




<P>White Space     125
</P>
</BLOCKQUOTE>



<P>The Document Type Declaration     126
</P>




<P>Element Declarations     127
</P>



<BLOCKQUOTE>
<P>EMPTY and ANY      129
</P>




<P>Element Content     129
</P>




<P>Mixed Content     131
</P>
</BLOCKQUOTE>



<P>Attribute List Declarations     132
</P>



<BLOCKQUOTE>
<P>Types of Attributes     132
</P>




<P>Default Actions     134
</P>
</BLOCKQUOTE>



<P>Entity Declarations     135
</P>




<BLOCKQUOTE>
<P>Internal and External Entities     135
</P>




<P>Text and Binary Entities     136
</P>




<P>Parameter Entities     136
</P>
</BLOCKQUOTE>



<P>Notation Declarations     137
</P>




<P>DTD Design Tips     137
</P>




<BLOCKQUOTE>
<P>External Versus Internal DTD Subset     138
</P>




<P>Conditional Sections     139
</P>




<P>Parameter Entities     140
</P>




<P>The Modular Approach     141
</P>




<P>User Switches     142
</P>

</BLOCKQUOTE>


<P>The Required Markup Declaration     144
</P>




<P>Summary     145
</P>

<A NAME="PAGENUM-14"><P>Page 14</P></A>



<P>
 9     Linking with XML     147
</P>




<P>Putting XML Links into Context     148
</P>



<BLOCKQUOTE>
<P>HTML Links     148
</P>




<P>Interoperability with HTML Links     150
</P>




<P>Additional Linking Facilities     151
</P>
</BLOCKQUOTE>



<P>Some Linking Concepts     152
</P>



<BLOCKQUOTE>
<P>A Concrete Example     152
</P>
</BLOCKQUOTE>



<P>Identifying XML Links     154
</P>



<BLOCKQUOTE>
<P>Fixed XML-LINK Attributes     155
</P>




<P>Declaring Your Own XML-LINK Attributes     155
</P>
</BLOCKQUOTE>



<P>Information Associated with XML Links     156
</P>



<BLOCKQUOTE>
<P>Resources     157
</P>




<P>Link Behavior     157
</P>




<P>Link Roles     159
</P>




<P>Labels for Links     160
</P>
</BLOCKQUOTE>



<P>Simple Links     161
</P>



<BLOCKQUOTE>
<P>Simple Links and Resources     162
</P>




<P>Simple Links and Link Rot     164
</P>
</BLOCKQUOTE>



<P>Extended Links     164
</P>



<BLOCKQUOTE>
<P>Out-of-Line Links     164
</P>




<P>EXTENDED Elements     166
</P>




<P>LOCATOR Elements     167
</P>




<P>Inline Extended Links     168
</P>
</BLOCKQUOTE>



<P>Addressing     169
</P>




<BLOCKQUOTE>
<P>Locator Syntax for XML Resources     169
</P>




<P>XPointers Made Easy     170
</P>




<P>The Rest of the XPointer Syntax     172
</P>

</BLOCKQUOTE>


<P>Extended Link Groups     177
</P>




<P>Summary     178
</P>




<P>     10     The XML Style Mechanism     179
</P>




<P>Style Sheets: Why Bother?     180
</P>



<BLOCKQUOTE>
<P>Separating Style From Markup     180
</P>




<P>Multiple Styles = Multiple Products     181
</P>




<P>XS and Generic XML Applications     182
</P>
</BLOCKQUOTE>



<P>How Do XS Style Sheets Work?     182
</P>




<BLOCKQUOTE>
<P>The Core Expression Language     183
</P>




<P>What's in the Style Sheet?     183
</P>
</BLOCKQUOTE>


<A NAME="PAGENUM-15"><P>Page 15</P></A>


<BLOCKQUOTE>
<P>
Procedures     184
</P>




<P>Flow Object Classes     185
</P>




<P>Characteristics     186
</P>




<P>Inheritance of Characteristics     187
</P>




<P>Characteristics of Your Sample Paragraph     187
</P>




<P>Element Construction Rules     189
</P>
</BLOCKQUOTE>



<P>Starting Up the Style Engine     189
</P>



<BLOCKQUOTE>
<P>Processing the Source Document as a Grove     189
</P>




<P>Choosing the Most Appropriate <BR>
Construction Rule     190
</P>




<P>Formatting the Sample Paragraph's Content     191
</P>




<P>Ports     192
</P>




<P>A Generalized Result     192
</P>




<P>A Real Result!     193
</P>
</BLOCKQUOTE>



<P>Some Refinements     194
</P>



<BLOCKQUOTE>
<P>Different Types of Construction Rules     194
</P>




<P>Using Attribute Specifications to <BR>
Control Formatting     195
</P>




<P>The Core Query Language     197
</P>
</BLOCKQUOTE>



<P>Summary     198
</P>




<P>     11     The XML Processor     201
</P>




<P>Types of XML Processors     202
</P>




<P>General Ground Rules     202
</P>




<BLOCKQUOTE>
<P>Treatment of Errors     202
</P>




<P>Character Processing     203
</P>
</BLOCKQUOTE>



<P>Treatment of Logical Markup     204
</P>



<BLOCKQUOTE>
<P>The DTD     205
</P>




<P>Comments     205
</P>




<P>Attributes     205
</P>




<P>Notations     206
</P>




<P>Conditional Sections     207
</P>
</BLOCKQUOTE>



<P>Treatment of Physical Structures     207
</P>




<BLOCKQUOTE>
<P>Document Entity     207
</P>




<P>Entities     207
</P>
</BLOCKQUOTE>



<P>Summary     209
</P>

<A NAME="PAGENUM-16"><P>Page 16</P></A>


<P><B>Part III     Using XML     211</B>
</P>




<P>     12     Morphing Existing HTML into XML     213
</P>




<P>Toward Well-Formedness: From Tag Soup to <BR>
Neatly Packed Suitcases     215
</P>



<BLOCKQUOTE>
<P>Non-Nested Tags     215
</P>