Question

Describe the main components of WSDL document of web service by using the example CardValidator WSDL document

Answer 1

Web Services Description Language (WSDL) is an XML-based file that basically tells the client application what the web service does. The WSDL file is used to describe in a nutshell what the web service does and gives the client all the information required to connect to the web service and use all the functionality provided by the web service.

WSDL document uses the following elements in the definition of network services:

Types– a container for data type definitions using some type system (such as XSD).

Message– an abstract, typed definition of the data being communicated.

Operation– an abstract description of an action supported by the service.

Port Type–an abstract set of operations supported by one or more endpoints.

Binding– a concrete protocol and data format specification for a particular port type.

Port– a single endpoint defined as a combination of a binding and a network address.

Service– a collection of related endpoints.