XSD my data type - xsd

Question

I would like to ask about .XSD document. I cannot find anything about creating my own type, for example:
<?xml version="1.0"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:complexType name="Client">
<xs:sequence>
<xs:element name="FirstName" type="string"/>
<xs:element name="SecondName" type="string"/>
</xs:sequence>
</xs:complexType>
<xs:complexType name="Contact">
<xs:sequence>
<xs:element name="contacts" type="Client" minOccurs="1"/>
</xs:sequence>
</xs:complexType>
</xsd:schema>
And I would like to know is that right way to define my own type contact?

Answer 1

A few points that were not quite right.
The xsd: namespace alias on the closing schema tag should be just xs:
The primitive string types need there types qualifying, ie xs:string.
From a style point of view ComplexTypes should end Type.
If you want to use the schema (presumably via the Contact) then you need to declare a root element.
<?xml version="1.0" encoding="utf-8" ?>
<!--Created with Liquid XML Studio 2012 Developer Edition (Trial) 10.0.1.3941 (http://www.liquid-technologies.com)-->
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:complexType name="ClientType">
<xs:sequence>
<xs:element name="FirstName" type="xs:string" />
<xs:element name="SecondName" type="xs:string" />
</xs:sequence>
</xs:complexType>
<xs:complexType name="ContactType">
<xs:sequence>
<xs:element name="contacts" type="ClientType" minOccurs="1" />
</xs:sequence>
</xs:complexType>
<xs:element name="Client" type="ClientType" />
</xs:schema>
Basically XML Schemas are complex things to write without a tool. I'd seriously look into getting a good schema designer, I'd recommend Liquid XML Studio.