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<div class=Section1 style='layout-grid:15.6pt'>
<p class=MsoNormal><font size=2 face=Verdana><span lang=EN-US style='font-size:
11.0pt;font-family:Verdana'>Dear XQuery experts,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Verdana><span lang=EN-US style='font-size:
11.0pt;font-family:Verdana'>I come to a question related to the schema import
in XQuery. The following is the context,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Verdana><span lang=EN-US style='font-size:
11.0pt;font-family:Verdana'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='layout-grid-mode:char'><b><font size=2 face=Verdana><span
lang=EN-US style='font-size:11.0pt;font-family:Verdana;font-weight:bold'>Given
two XSD files named hats1.xsd and hats2.xsd (note: contents of these two files
are the same) stored at the current directory as following,<o:p></o:p></span></font></b></p>
<p class=MsoNormal style='margin-left:18.0pt;text-indent:-18.0pt;mso-list:l0 level1 lfo1;
layout-grid-mode:char'><![if !supportLists]><b><font size=2 face=Verdana><span
lang=EN-US style='font-size:11.0pt;font-family:Verdana;font-weight:bold'><span
style='mso-list:Ignore'>1.<font size=1 face="Times New Roman"><span
style='font:7.0pt "Times New Roman"'> </span></font></span></span></font></b><![endif]><b><font
size=2 face=Verdana><span lang=EN-US style='font-size:11.0pt;font-family:Verdana;
font-weight:bold'>hats1.xsd (A schema defines a simple type HatSize)<o:p></o:p></span></font></b></p>
<p class=MsoNormal style='layout-grid-mode:char'><font size=2 face=Verdana><span
lang=EN-US style='font-size:11.0pt;font-family:Verdana'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd;
layout-grid-mode:char'><font size=2 face=Verdana><span lang=EN-US
style='font-size:11.0pt;font-family:Verdana'><?xml version="1.0"
encoding="UTF-8"?><o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd;
layout-grid-mode:char'><font size=2 face=Verdana><span lang=EN-US
style='font-size:11.0pt;font-family:Verdana'><xs:schema
xmlns:xs="http://www.w3.org/2001/XMLSchema"<o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd;
layout-grid-mode:char'><font size=2 face=Verdana><span lang=EN-US
style='font-size:11.0pt;font-family:Verdana'>xmlns="http://www.hats.com/hats"<o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd;
layout-grid-mode:char'><font size=2 face=Verdana><span lang=EN-US
style='font-size:11.0pt;font-family:Verdana'>targetNamespace="http://www.hats.com/hats"><o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd;
layout-grid-mode:char'><font size=2 face=Verdana><span lang=EN-US
style='font-size:11.0pt;font-family:Verdana'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd;
layout-grid-mode:char'><font size=2 face=Verdana><span lang=EN-US
style='font-size:11.0pt;font-family:Verdana'><xs:simpleType
name="HatSize"><o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd;
layout-grid-mode:char'><font size=2 face=Verdana><span lang=EN-US
style='font-size:11.0pt;font-family:Verdana'>
<xs:restriction
base="xs:integer"><o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd;
layout-grid-mode:char'><font size=2 face=Verdana><span lang=EN-US
style='font-size:11.0pt;font-family:Verdana'>
<xs:minInclusive
value="1"/><o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd;
layout-grid-mode:char'><font size=2 face=Verdana><span lang=EN-US
style='font-size:11.0pt;font-family:Verdana'>
<xs:maxInclusive
value="10"/><o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd;
layout-grid-mode:char'><font size=2 face=Verdana><span lang=EN-US
style='font-size:11.0pt;font-family:Verdana'>
</xs:restriction><o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd;
layout-grid-mode:char'><font size=2 face=Verdana><span lang=EN-US
style='font-size:11.0pt;font-family:Verdana'></xs:simpleType><o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd;
layout-grid-mode:char'><font size=2 face=Verdana><span lang=EN-US
style='font-size:11.0pt;font-family:Verdana'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd;
layout-grid-mode:char'><font size=2 face=Verdana><span lang=EN-US
style='font-size:11.0pt;font-family:Verdana'></xs:schema><o:p></o:p></span></font></p>
<p class=MsoNormal style='layout-grid-mode:char'><font size=2 face=Verdana><span
lang=EN-US style='font-size:11.0pt;font-family:Verdana'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='margin-left:18.0pt;text-indent:-18.0pt;mso-list:l0 level1 lfo1;
layout-grid-mode:char'><![if !supportLists]><b><font size=2 face=Verdana><span
lang=EN-US style='font-size:11.0pt;font-family:Verdana;font-weight:bold'><span
style='mso-list:Ignore'>2.<font size=1 face="Times New Roman"><span
style='font:7.0pt "Times New Roman"'> </span></font></span></span></font></b><![endif]><b><font
size=2 face=Verdana><span lang=EN-US style='font-size:11.0pt;font-family:Verdana;
font-weight:bold'>hats2.xsd (A schema defines a simple type HatSize)<o:p></o:p></span></font></b></p>
<p class=MsoNormal style='layout-grid-mode:char'><font size=2 face=Verdana><span
lang=EN-US style='font-size:11.0pt;font-family:Verdana'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd;
layout-grid-mode:char'><font size=2 face=Verdana><span lang=EN-US
style='font-size:11.0pt;font-family:Verdana'><?xml version="1.0"
encoding="UTF-8"?><o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd;
layout-grid-mode:char'><font size=2 face=Verdana><span lang=EN-US
style='font-size:11.0pt;font-family:Verdana'><xs:schema
xmlns:xs="http://www.w3.org/2001/XMLSchema"<o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd;
layout-grid-mode:char'><font size=2 face=Verdana><span lang=EN-US
style='font-size:11.0pt;font-family:Verdana'>xmlns="http://www.hats.com/hats"<o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd;
layout-grid-mode:char'><font size=2 face=Verdana><span lang=EN-US
style='font-size:11.0pt;font-family:Verdana'>targetNamespace="http://www.hats.com/hats"><o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd;
layout-grid-mode:char'><font size=2 face=Verdana><span lang=EN-US
style='font-size:11.0pt;font-family:Verdana'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd;
layout-grid-mode:char'><font size=2 face=Verdana><span lang=EN-US
style='font-size:11.0pt;font-family:Verdana'><xs:simpleType
name="HatSize"><o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd;
layout-grid-mode:char'><font size=2 face=Verdana><span lang=EN-US
style='font-size:11.0pt;font-family:Verdana'>
<xs:restriction
base="xs:integer"><o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd;
layout-grid-mode:char'><font size=2 face=Verdana><span lang=EN-US
style='font-size:11.0pt;font-family:Verdana'>
<xs:minInclusive
value="1"/><o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd;
layout-grid-mode:char'><font size=2 face=Verdana><span lang=EN-US
style='font-size:11.0pt;font-family:Verdana'>
<xs:maxInclusive
value="10"/><o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd;
layout-grid-mode:char'><font size=2 face=Verdana><span lang=EN-US
style='font-size:11.0pt;font-family:Verdana'>
</xs:restriction><o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd;
layout-grid-mode:char'><font size=2 face=Verdana><span lang=EN-US
style='font-size:11.0pt;font-family:Verdana'></xs:simpleType><o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd;
layout-grid-mode:char'><font size=2 face=Verdana><span lang=EN-US
style='font-size:11.0pt;font-family:Verdana'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd;
layout-grid-mode:char'><font size=2 face=Verdana><span lang=EN-US
style='font-size:11.0pt;font-family:Verdana'></xs:schema><o:p></o:p></span></font></p>
<p class=MsoNormal style='layout-grid-mode:char'><font size=2 face=Verdana><span
lang=EN-US style='font-size:11.0pt;font-family:Verdana'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='layout-grid-mode:char'><b><font size=2 face=Verdana><span
lang=EN-US style='font-size:11.0pt;font-family:Verdana;font-weight:bold'>Given
two XQuery files named module1.xq and module2.xq stored at the current
directory as following,<o:p></o:p></span></font></b></p>
<p class=MsoNormal style='layout-grid-mode:char'><font size=2 face=Verdana><span
lang=EN-US style='font-size:11.0pt;font-family:Verdana'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='margin-left:18.0pt;text-indent:-18.0pt;mso-list:l0 level1 lfo1;
layout-grid-mode:char'><![if !supportLists]><b><font size=2 face=Verdana><span
lang=EN-US style='font-size:11.0pt;font-family:Verdana;font-weight:bold'><span
style='mso-list:Ignore'>3.<font size=1 face="Times New Roman"><span
style='font:7.0pt "Times New Roman"'> </span></font></span></span></font></b><![endif]><b><font
size=2 face=Verdana><span lang=EN-US style='font-size:11.0pt;font-family:Verdana;
font-weight:bold'>module1.xq (A module contains a function simply return a
HatSize instance, importing schema hats1.xsd)<o:p></o:p></span></font></b></p>
<p class=MsoNormal style='layout-grid-mode:char'><font size=2 face=Verdana><span
lang=EN-US style='font-size:11.0pt;font-family:Verdana'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd;
layout-grid-mode:char'><font size=2 face=Verdana><span lang=EN-US
style='font-size:11.0pt;font-family:Verdana'>module namespace
module1="http://www.hats.com/module1";<o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd;
layout-grid-mode:char'><font size=2 face=Verdana><span lang=EN-US
style='font-size:11.0pt;font-family:Verdana'>import schema namespace
hats="http://www.hats.com/hats" at "hats1.xsd";<o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd;
layout-grid-mode:char'><font size=2 face=Verdana><span lang=EN-US
style='font-size:11.0pt;font-family:Verdana'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd;
layout-grid-mode:char'><font size=2 face=Verdana><span lang=EN-US
style='font-size:11.0pt;font-family:Verdana'>declare function module1:function1()
as hats:HatSize<o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd;
layout-grid-mode:char'><font size=2 face=Verdana><span lang=EN-US
style='font-size:11.0pt;font-family:Verdana'>{<o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd;
text-indent:21.0pt;layout-grid-mode:char'><font size=2 face=Verdana><span
lang=EN-US style='font-size:11.0pt;font-family:Verdana'>5 cast as hats:HatSize<o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd;
layout-grid-mode:char'><font size=2 face=Verdana><span lang=EN-US
style='font-size:11.0pt;font-family:Verdana'>};<o:p></o:p></span></font></p>
<p class=MsoNormal style='layout-grid-mode:char'><font size=2 face=Verdana><span
lang=EN-US style='font-size:11.0pt;font-family:Verdana'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='margin-left:18.0pt;text-indent:-18.0pt;mso-list:l0 level1 lfo1;
layout-grid-mode:char'><![if !supportLists]><b><font size=2 face=Verdana><span
lang=EN-US style='font-size:11.0pt;font-family:Verdana;font-weight:bold'><span
style='mso-list:Ignore'>4.<font size=1 face="Times New Roman"><span
style='font:7.0pt "Times New Roman"'> </span></font></span></span></font></b><![endif]><b><font
size=2 face=Verdana><span lang=EN-US style='font-size:11.0pt;font-family:Verdana;
font-weight:bold'>module2.xq (Main module call the function and test instance
of HatSize over the instance, importing schema hats2.xsd)<o:p></o:p></span></font></b></p>
<p class=MsoNormal style='layout-grid-mode:char'><font size=2 face=Verdana><span
lang=EN-US style='font-size:11.0pt;font-family:Verdana'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd;
layout-grid-mode:char'><font size=2 face=Verdana><span lang=EN-US
style='font-size:11.0pt;font-family:Verdana'>import module namespace
module1="http://www.hats.com/module1" at "module1.xq";<o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd;
layout-grid-mode:char'><font size=2 face=Verdana><span lang=EN-US
style='font-size:11.0pt;font-family:Verdana'>import schema namespace
hats="http://www.hats.com/hats" at "hats2.xsd";<o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd;
layout-grid-mode:char'><font size=2 face=Verdana><span lang=EN-US
style='font-size:11.0pt;font-family:Verdana'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd;
layout-grid-mode:char'><font size=2 face=Verdana><span lang=EN-US
style='font-size:11.0pt;font-family:Verdana'>module1:function1() instance of hats:HatSize<o:p></o:p></span></font></p>
<p class=MsoNormal style='layout-grid-mode:char'><font size=2 face=Verdana><span
lang=EN-US style='font-size:11.0pt;font-family:Verdana'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='layout-grid-mode:char'><b><font size=2 face=Verdana><span
lang=EN-US style='font-size:11.0pt;font-family:Verdana;font-weight:bold'>Question:
<o:p></o:p></span></font></b></p>
<p class=MsoNormal style='layout-grid-mode:char'><b><font size=2 face=Verdana><span
lang=EN-US style='font-size:11.0pt;font-family:Verdana;font-weight:bold'><o:p> </o:p></span></font></b></p>
<p class=MsoNormal style='layout-grid-mode:char'><b><font size=2 face=Verdana><span
lang=EN-US style='font-size:11.0pt;font-family:Verdana;font-weight:bold'>What’s
the right result when evaluating on module2.xq? <o:p></o:p></span></font></b></p>
<p class=MsoNormal style='margin-left:18.0pt;text-indent:-18.0pt;mso-list:l1 level1 lfo2;
layout-grid-mode:char'><![if !supportLists]><b><font size=2 face=Verdana><span
lang=EN-US style='font-size:11.0pt;font-family:Verdana;font-weight:bold'><span
style='mso-list:Ignore'>A.<font size=1 face="Times New Roman"><span
style='font:7.0pt "Times New Roman"'> </span></font></span></span></font></b><![endif]><b><font
size=2 face=Verdana><span lang=EN-US style='font-size:11.0pt;font-family:Verdana;
font-weight:bold'>true<o:p></o:p></span></font></b></p>
<p class=MsoNormal style='margin-left:18.0pt;text-indent:-18.0pt;mso-list:l1 level1 lfo2;
layout-grid-mode:char'><![if !supportLists]><b><font size=2 face=Verdana><span
lang=EN-US style='font-size:11.0pt;font-family:Verdana;font-weight:bold'><span
style='mso-list:Ignore'>B.<font size=1 face="Times New Roman"><span
style='font:7.0pt "Times New Roman"'> </span></font></span></span></font></b><![endif]><b><font
size=2 face=Verdana><span lang=EN-US style='font-size:11.0pt;font-family:Verdana;
font-weight:bold'>false<o:p></o:p></span></font></b></p>
<p class=MsoNormal style='margin-left:18.0pt;text-indent:-18.0pt;mso-list:l1 level1 lfo2;
layout-grid-mode:char'><![if !supportLists]><b><font size=2 face=Verdana><span
lang=EN-US style='font-size:11.0pt;font-family:Verdana;font-weight:bold'><span
style='mso-list:Ignore'>C.<font size=1 face="Times New Roman"><span
style='font:7.0pt "Times New Roman"'> </span></font></span></span></font></b><![endif]><b><font
size=2 face=Verdana><span lang=EN-US style='font-size:11.0pt;font-family:Verdana;
font-weight:bold'>static error should be raised<o:p></o:p></span></font></b></p>
<p class=MsoNormal style='margin-left:18.0pt;text-indent:-18.0pt;mso-list:l1 level1 lfo2;
layout-grid-mode:char'><![if !supportLists]><b><font size=2 face=Verdana><span
lang=EN-US style='font-size:11.0pt;font-family:Verdana;font-weight:bold'><span
style='mso-list:Ignore'>D.<font size=1 face="Times New Roman"><span
style='font:7.0pt "Times New Roman"'> </span></font></span></span></font></b><![endif]><b><font
size=2 face=Verdana><span lang=EN-US style='font-size:11.0pt;font-family:Verdana;
font-weight:bold'>dynamic error should be raised<o:p></o:p></span></font></b></p>
<p class=MsoNormal><b><font size=2 face=Verdana><span lang=EN-US
style='font-size:11.0pt;font-family:Verdana;font-weight:bold'><o:p> </o:p></span></font></b></p>
<p class=MsoNormal><b><font size=2 face=Verdana><span lang=EN-US
style='font-size:11.0pt;font-family:Verdana;font-weight:bold'>It is actually
asking “what identifies an XML schema, target namespace or schema
location?”<o:p></o:p></span></font></b></p>
<p class=MsoNormal><b><font size=2 face=Verdana><span lang=EN-US
style='font-size:11.0pt;font-family:Verdana;font-weight:bold'><o:p> </o:p></span></font></b></p>
<p class=MsoNormal><font size=2 face=Verdana><span lang=EN-US style='font-size:
11.0pt;font-family:Verdana'>Thanks,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Verdana><span lang=EN-US style='font-size:
11.0pt;font-family:Verdana'>Haifeng Chen<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Verdana><span lang=EN-US style='font-size:
11.0pt;font-family:Verdana'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Verdana><span lang=EN-US style='font-size:
11.0pt;font-family:Verdana'><o:p> </o:p></span></font></p>
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