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>