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 <h1 class="topictitle1">Web Services Description Language (WSDL) reference</h1>


 <div><p>A WSDL document defines services as collections of network endpoints,
 or ports. In WSDL, the abstract definition of endpoints and messages is separated
 from their concrete network deployment or data format bindings. This allows
 the reuse of abstract definitions: messages, which are abstract descriptions
 of the data being exchanged, and port types which are abstract collections
 of operations. </p>

 <div class="section"><p>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 define
 a service. Hence, a WSDL document uses the following elements in the definition
 of network services:</p>
 <ul>
 <li> <span class="uicontrol">Types</span>: a container for data type definitions using
 some type system (such as XSD).</li>

 <li> <span class="uicontrol">Message</span>: an abstract, typed definition of the
 data being communicated.</li>

 <li> <span class="uicontrol">Operation</span>: an abstract description of an action
 supported by the service.</li>

 <li> <span class="uicontrol">Port Type</span>: an abstract set of operations supported
 by one or more endpoints.</li>

 <li> <span class="uicontrol">Binding</span>: a concrete protocol and data format specification
 for a particular port type. The binding is usually SOAP and the encoding and
 data formatting regulations used (also known as the style) is usually literal
 (this includes document/literal, and sometimes rpc/literal).</li>

 <li> <span class="uicontrol">Port</span>: a single endpoint defined as a combination
 of a binding and a network address.</li>

 <li> <span class="uicontrol">Service</span>: a collection of related endpoints.</li>

 </ul>
 <p>For more information on WSDL, refer to  </p>
 <p><a href="http://www.w3.org/TR/wsdl" target="_blank">www.w3.org/TR/wsdl</a></p>
 <p>The
 various WSDL elements can be structured in many ways. It can be in one single
 WSDL file or in multiple WSDL files.</p>
 </div>

 </div>

 <div>
 <div class="familylinks">
 <div class="parentlink"><strong>Parent topic:</strong> <a href="../concepts/cwsdl.html" title="Web Services Description Language (WSDL) is a standard specification for describing networked, XML-based services. It provides a simple way for service providers to describe the basic format of requests to their systems regardless of the underlying run-time implementation.">Web Services Description Language (WSDL)</a></div>
 </div>

 <div class="linklist"><strong>Related Concepts</strong><br />

 <div><a href="../concepts/cws.html" title="A Web service is a set of related application functions that can be programmatically invoked over the Internet. Businesses can dynamically mix and match Web services to perform complex transactions with minimal programming. Web services allow buyers and sellers all over the world to discover each other, connect dynamically, and execute transactions in real time with minimal human interaction.">Web services overview</a></div>
 <div><a href="../concepts/cwsdl.html" title="Web Services Description Language (WSDL) is a standard specification for describing networked, XML-based services. It provides a simple way for service providers to describe the basic format of requests to their systems regardless of the underlying run-time implementation.">Web Services Description Language (WSDL)</a></div></div>

 <div class="linklist"><strong>Related Tasks</strong><br />

 <div><a href="../tasks/toverws.html"> Developing Web
 services</a></div>
 <div><a href="../../org.eclipse.jst.ws.consumption.ui.doc.user/tasks/tuddiexp.html"> Using the Web Services Explorer</a></div></div>
 </div>

 </body>
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	<title>Web Services Description Language (WSDL) reference</title>
	</head>
	<body id="rwsdl"><a name="rwsdl"><!-- --></a>


	<h1 class="topictitle1">Web Services Description Language (WSDL) reference</h1>



	<div><p>A WSDL document defines services as collections of network endpoints,
	or ports. In WSDL, the abstract definition of endpoints and messages is separated
	from their concrete network deployment or data format bindings. This allows
	the reuse of abstract definitions: messages, which are abstract descriptions
	of the data being exchanged, and port types which are abstract collections
	of operations. </p>

	<div class="section"><p>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 define
	a service. Hence, a WSDL document uses the following elements in the definition
	of network services:</p>
	<ul>
	<li> <span class="uicontrol">Types</span>: a container for data type definitions using
	some type system (such as XSD).</li>

	<li> <span class="uicontrol">Message</span>: an abstract, typed definition of the
	data being communicated.</li>

	<li> <span class="uicontrol">Operation</span>: an abstract description of an action
	supported by the service.</li>

	<li> <span class="uicontrol">Port Type</span>: an abstract set of operations supported
	by one or more endpoints.</li>

	<li> <span class="uicontrol">Binding</span>: a concrete protocol and data format specification
	for a particular port type. The binding is usually SOAP and the encoding and
	data formatting regulations used (also known as the style) is usually literal
	(this includes document/literal, and sometimes rpc/literal).</li>

	<li> <span class="uicontrol">Port</span>: a single endpoint defined as a combination
	of a binding and a network address.</li>

	<li> <span class="uicontrol">Service</span>: a collection of related endpoints.</li>

	</ul>
	<p>For more information on WSDL, refer to </p>
	<p><a href="http://www.w3.org/TR/wsdl" target="_blank">www.w3.org/TR/wsdl</a></p>
	<p>The
	various WSDL elements can be structured in many ways. It can be in one single
	WSDL file or in multiple WSDL files.</p>
	</div>

	</div>

	<div>
	<div class="familylinks">
	<div class="parentlink"><strong>Parent topic:</strong> <a href="../concepts/cwsdl.html" title="Web Services Description Language (WSDL) is a standard specification for describing networked, XML-based services. It provides a simple way for service providers to describe the basic format of requests to their systems regardless of the underlying run-time implementation.">Web Services Description Language (WSDL)</a></div>
	</div>

	<div class="linklist"><strong>Related Concepts</strong><br />

	<div><a href="../concepts/cws.html" title="A Web service is a set of related application functions that can be programmatically invoked over the Internet. Businesses can dynamically mix and match Web services to perform complex transactions with minimal programming. Web services allow buyers and sellers all over the world to discover each other, connect dynamically, and execute transactions in real time with minimal human interaction.">Web services overview</a></div>
	<div><a href="../concepts/cwsdl.html" title="Web Services Description Language (WSDL) is a standard specification for describing networked, XML-based services. It provides a simple way for service providers to describe the basic format of requests to their systems regardless of the underlying run-time implementation.">Web Services Description Language (WSDL)</a></div></div>

	<div class="linklist"><strong>Related Tasks</strong><br />

	<div><a href="../tasks/toverws.html"> Developing Web
	services</a></div>
	<div><a href="../../org.eclipse.jst.ws.consumption.ui.doc.user/tasks/tuddiexp.html"> Using the Web Services Explorer</a></div></div>
	</div>

	</body>
	</html>