i want to understand the contents of schema ?

hi ,
i want to understand the contents of schema ?

Code:

---

<?xml version=”1.0”?>
<schema xmlns=”http://www.w3.org/2001/XMLSchema”
xmlns:target=”http://www.example.com/name”
targetNamespace=”http://www.example.com/name”
elementFormDefault=”qualified”>
<element name=”name”>

---

What do you NOT understand?

The posted example basically imports two schemas http://www.w3.org/2001/XMLSchema and http://www.example.com/name

thanks, i know why i use namespace "xmlns=”http://www.w3.org/2001/XMLSchema" but what is this mean "xmlns:target=”http://www.example.com/name”" and what is targetNamespace and the difference between it and normal namespace ? and also what is mean by "elementFormDefault=”qualified”" i read that u can modify the default specifying how element should be qualified but i can not understand what is the effect of it if i add it in my schema? plz give me simple explain if u can help me.