J2EE Overview
* Web Services: Web services are Web-based enterprise applications that use open, XML-based standards and transport protocols to exchange data with calling clients.
* The SOAP portion of a transported message handles the following:
• Defines an XML-based envelope to describe what is in the message and
how to process the message.
• Includes XML-based encoding rules to express instances of application defined data types within the message.
• Defines an XML-based convention for representing the request to the
remote service and the resulting response.
* WSDL: It is a standardized XML format for describing network services. The description includes the name of the service, the location of the service, and how to communicate with the service.
WSDLs can be stored in UDDI registries and/or published on the Web. The
J2EE platform provides a tool for generating the WSDL for a Web service that
uses remote procedure calls to communicate with clients.
* UDDI : Universal Description, Discovery, and Integration
* J2EE Architecture
• Client-tier components run on the client machine.
• Web-tier components run on the J2EE server.
• Business-tier components run on the J2EE server.
• Enterprise information system (EIS)-tier software runs on the EIS server.
See dgm on Page 5
* Web Services: Web services are Web-based enterprise applications that use open, XML-based standards and transport protocols to exchange data with calling clients.
* The SOAP portion of a transported message handles the following:
• Defines an XML-based envelope to describe what is in the message and
how to process the message.
• Includes XML-based encoding rules to express instances of application defined data types within the message.
• Defines an XML-based convention for representing the request to the
remote service and the resulting response.
* WSDL: It is a standardized XML format for describing network services. The description includes the name of the service, the location of the service, and how to communicate with the service.
WSDLs can be stored in UDDI registries and/or published on the Web. The
J2EE platform provides a tool for generating the WSDL for a Web service that
uses remote procedure calls to communicate with clients.
* UDDI : Universal Description, Discovery, and Integration
* J2EE Architecture
• Client-tier components run on the client machine.
• Web-tier components run on the J2EE server.
• Business-tier components run on the J2EE server.
• Enterprise information system (EIS)-tier software runs on the EIS server.
See dgm on Page 5
