我一直在尝试验证这个与学生和教师打交道的XML文档，并且我一直在收到错误信息，说明该元素无效。我的错误似乎是元素在大多数情况下是无效的。
我将属性声明移到了元素声明的顶部，我又收到了另一个错误。我不能为我的生活弄清楚如何使这个模式工作和验证XML文档。我的XML文档以及我的架构元素都很好。
下面是我的XML文件，以及我的2架构。有3个文档，一个常规文档和两个XML模式。我希望得到一个如何解决这些错误的答案，因为我已尽力解决这些问题。它似乎与我的属性或命名空间有关，因为我在XML文档中声明了2个命名空间。
我之前尝试过验证没有名称空间的XML文档，我似乎对它做得很好。当存在多个命名空间时，我似乎遇到了模式验证的问题，或者我在混合中添加了属性。关于如何避免将来出现这些问题的任何提示也将不胜感激。
?xml version="1.0" encoding="UTF-8"?>
<HACC-People xmlns:s="http://www.college.com/ns/student"
xmlns:f="http://www.college.com/ns/faculty"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.college.com/ns/student Hacc-faculty1.xsd
http://www.college.com/ns/faculty hacc-faculty2.xsd">
<s:student>
<s:name first="Tyler" last="Brown">
<s:major>Mathematics</s:major>
<s:advisor>Norman Williams</s:advisor>
<s:GPA>3.62</s:GPA>
<s:phone-number>717-358-4780</s:phone-number>
</s:name>
<s:name first="Benny" last="Elliott">
<s:major>Computer Science</s:major>
<s:advisor>Amy Smith</s:advisor>
<s:GPA>2.89</s:GPA>
<s:phone-number>717-867-3125</s:phone-number>
</s:name>
<s:name first="Marcus" last="Wilt">
<s:major>Pyschology</s:major>
<s:advisor>Alex Schwartz</s:advisor>
<s:GPA>3.30</s:GPA>
<s:phone-number>717-225-4982</s:phone-number>
</s:name>
</s:student>
<f:faculty>
<f:name first="Todd" last="Anderson">
<f:subject-taught>Web</f:subject-taught>
<f:courses-taught>Web101, Web110, Web125</f:courses-taught>
<f:years-teaching>5</f:years-teaching>
<f:email>todda@hacc.edu</f:email>
<f:phone-number>717-555-4000</f:phone-number>
</f:name>
<f:name first="Mark" last="Calhoun">
<f:subject-taught>Accounting</f:subject-taught>
<f:courses-taught>ACCT101, ACCT200, ACCT203</f:courses-taught>
<f:years-teaching>10</f:years-teaching>
<f:email>mjcal@hacc.edu</f:email>
<f:phone-number>717-373-2508</f:phone-number>
</f:name>
<f:name first="Elizabeth" last="Hill">
<f:subject-taught>History</f:subject-taught>
<f:courses-taught>Hist104, Hist111</f:courses-taught>
<f:years-teaching>3</f:years-teaching>
<f:email>lizhill@hacc.edu</f:email>
<f:phone-number>717-913-6942</f:phone-number>
</f:name>
</f:faculty>
</HACC-People>
<?xml version="1.0" encoding="utf-8"?>
<schema xmlns:s="http://www.college.com/ns/student"
attributeFormDefault="unqualified"
elementFormDefault="qualified"
targetNamespace="http://www.college.com/ns/student"
xmlns="http://www.w3.org/2001/XMLSchema">
<element name="HACC-People">
<complexType>
<sequence>
<element name="student">
<attribute name="first" type="string" use="required" />
<attribute name="last" type="string" use="required" />
<complexType>
<sequence>
<element name="name" maxOccurs="unbounded" >
<complexType>
<sequence>
<element name="major" type="string" />
<element name="advisor" type="string" />
<element name="GPA" type="decimal" />
<element name="phone-number" type="string" />
</sequence>
</complexType>
</element>
</sequence>
<element ref="s:student" />
<element ref="f:faculty" />
</complexType>
</element>
</sequence>
</complexType>
</element>
</schema>
<?xml version="1.0" encoding="utf-8"?>
<schema xmlns:f="http://www.college.com/ns/faculty"
attributeFormDefault="unqualified"
elementFormDefault="qualified"
targetNamespace="http://www.college.com/ns/faculty"
xmlns="http://www.w3.org/2001/XMLSchema">
<import namespace="http://www.college.com/ns/student"
schemaLocation="Hacc-faculty1.xsd" />
<element name="faculty">
<attribute name="first" type="string" use="required" />
<attribute name="last" type="string" use="required" />
<complexType>
<sequence>
<element name="name" maxOccurs="unbounded">
<complexType>
<sequence>
<element name="subject-taught" type="string" />
<element name="courses-taught" type="string" />
<element name="years-teaching" type="integer" />
<element name="email" type="string" />
<element name="phone-number" type="string" />
</sequence>
</complexType>
</element>
</sequence>
</complexType>
</element>
</schema>