what is...?

[debasis]

chema is a way to describe and validate data in an XML environment.What do you mean by give example of it?

Firstly its not "CHEMA" its "Schema" and proving a example means giving a sample code plz look at below.

<?xml version="1.0"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">

<xs:element name="note">
<xs:complexType>
<xs:sequence>
<xs:element name="to" type="xs:string"/>
<xs:element name="from" type="xs:string"/>
<xs:element name="heading" type="xs:string"/>
<xs:element name="body" type="xs:string"/>
</xs:sequence>
</xs:complexType>
</xs:element>

</xs:schema>

Thanks.