nhansu.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE company SYSTEM "nhansu.dtd">
<company>

    <department name="Kế toán">
        <employee id="E001">
            <name>Nguyễn Văn A</name>
            <position>Kế toán trưởng</position>
        </employee>
        <employee id="E002">
            <name>Nguyễn Văn B</name>
            <position>Kế toán viên</position>
        </employee>
    </department>

    <department name="Công nghệ thông tin">
        <employee id="E003">
            <name>Nguyễn Văn C</name>
            <position>Lập trình viên</position>
        </employee>
        <employee id="E004">
            <name>Nguyễn Văn D</name>
            <position>Quản trị hệ thống</position>
        </employee>
    </department>

</company>