Describe how WSDL enables one to separate the description of the abstract functionality offered by a service from concrete details of a service description such as "how" and "where" that functionality is offered.


While SCDJWS 5.0 objectives specify WSDL 2.0 specification version, the exam questions are still based on the WSDL 1.1 specification.

A WSDL document defines services as collections of network endpoints, or ports. In WSDL, the abstract definitions of endpoints and messages are separated from their concrete network deployment or data format bindings. This separation supports the reuse of abstract definitions: messages, which are abstract descriptions of exchanged data, and port types, which are abstract collections of operations. The concrete protocol and data format specifications for a particular port type constitutes a reusable binding. A port is defined by associating a network address with a reusable binding, and a collection of ports defines a service. Therefore, a WSDL document is composed of several elements.

The following is the structure of the information in a WSDL file:

Structure of the information in a WSDL file

A WSDL file contains the following parts:

WSDL file

A WSDL file describes a Web Service with the following elements:

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