Oracle | XML, Web Services, and the Data Revolution


Team-Fly

	XML, Web Services, and the Data Revolution By Frank P. Coyle
	Table of Contents

	Chapter 6. .NET, J2EE, and Beyond

Oracle brings its database expertise to Web services.

Oracle has adapted its database products to fit the demands of the Web services world. The Oracle9 i Web Services Framework provides an infrastructure that supports the development, management, and deployment of Web services to portals, exchanges, and other Internet and mobile applications. It uses XML as a common access method.

The Oracle9 i Web Services Framework uses a Web services client library written in Java. The client library includes connection drivers for linking to Web services repositories. Oracle9 i Web-service descriptors can be published as WSDL in other UDDI registries to support Internet-wide service discovery, and services described using WSDL can be imported into the Oracle9 i Web Services Registry.

Adapters

Oracle uses adapters to extend the basic framework. For example, specialized adapters may be created to build connections with legacy systems. Some of the adapters include

Input and output adapters for specifying XSLT style sheets to transform service requests to the XML format required by a service
Protocol adapters to connect with Web services using HTTP, HTTP over Secure Socket Layers, Java Database Connectivity, Simple Mail Transfer Protocol, and SOAP
Execution adapters to execute service requests in a particular flow, minimally relaying a request to contact a resource provider, and relaying the response. Standard adapters include simple, compound, failover, and conditional.


Team-Fly

Top