2。我在某书上看到说一个名字空间内的属性不能重名。但是下面的代码？
<?xml version="1.0" encoding="UTF-8"?>
<xmp:document
    xmlns:xmp="http://xmlpowercorp"
    documentDate="2005-03-02">
    <xmp:comment>Good risk</xmp:comment>
    <mortgagee xmp:phone="888.555.1234">  //mortgagee的phone属性
        <name>James Blandings</name>
        <location>1234 299th St</location>
        <city>New York</city>
        <state>NY</state>
    </mortgagee>
    <mortgages>
        <mortgage loanNumber="66 7777 88">
            <property>The Hackett Place</property>
            <date>2005-03-01</date>
            <loanAmount>80000</loanAmount>
            <term>15</term>
        </mortgage>
        .
        .
        .
        <mortgage loanNumber="22 6666 99">
            <property>345 Notingham Court</property>
            <date>2005-03-02</date>
            <loanAmount>120000</loanAmount>
            <term>30</term>
        </mortgage>
    </mortgages>
    <bank xmp:phone="888.555.8888"> //bank的phone属性
        <name>XML Bank</name>
        <location>12 Schema Place</location>
        <city>New York</city>
        <state>NY</state>
    </bank>
</xmp:document>

mortgagee的phone属性和bank的phone属性都在xmp名字空间中，它们是不是会冲突呢，还是说属于不同元素的同名属性是可以的？