WSDL (Web Services Description Language) Question:

WSDL given us many element to describe its document. I have only given you four elements which are main elements to describing WSDL document.
These are:
1. <portType> is an important element to describe WSDL document.Using this element we can perform a task to compare a function library(like: class) in traditional programming language.
2. each <message> element has more than one parts.we can compare that parts.
3. using <types> we can define datatypes that are used in web services.
4.using <binding> for each port we can define the format of messages and details of protocol.
syntax:
<definitions>
<types>
To define type here
</types>
<message>
To define message here
</message>
<portType>
To define portType here
</portType>
<binding>
To define binding here
</binding>
</definitions>