1. Web services, WSDL, SOAP and UDDI
1.0

2. Introduction
Back-end systems

3. Web Services
“Web services wrap, presenting to the network a standard way of interfacing with back-end software systems, such as DBMS, .NET, J2EE, or CORBA, objects,…” – Understanding Web Services, Newcomer, 2003.

4. SOAP Simple Object Access Protocol
A collection of XML-based technologies
Defines an envelope for Web services communication – mappable to HTTP and other transports – and provides a serialization format for transporting XML documents over network

5. UDDI Universal Discovery, Description and Integration
A web services registry and discovery mechanism, is used for storing and categorizing business information and for retrieving pointers to Web services interfaces

6. WSDL Web Services Description Language
XML-based technology, defines Web services interfaces, data and message types, interaction patterns, and protocol mappings
Describes
The name of the service
The location the service can be accessed at
The methods available for invocation
The input and output parameters for each method