SOA

Systems Oriented Architecture



Systems Oriented Architecture

Introduction

Representative of SOA architecture, service-oriented distributed computing is the application of a pair of synchronous and asynchronous architecture model. I absolutely believe that there are many companies and organizations, cannot change or to promote their new business activities, because of its legacy applications. They hope the new business innovation, and more with partners to increase their speed of service, inducing customers to buy more of their products and services. The problem is they do not know how to achieve such a computing system. In large IT environments, existing applications and legacy systems work, its cost is very expensive, difficult to create enough computing system from scratch. In this case, the developer, and use appropriate methods, such as SOA, to correct the problem. (Dimitrios, et al., 2007)

SOA is the ability to integrate existing applications and services to implement a new and specific business processes. With SOA, companies can share with partners, and other organizations of the costumers to their data and applications to reduce costs and development time. According to IBM's SOA Centre of Excellence for SOA is defined as: "service-oriented architecture is an enterprise-scale IT needs of resource structure linked to these resources consistent with the business as a service, can contribute, in a value network, enterprise representatives. Or business line to complete the business requirements. SOA application as the main structural factors contrast, subsystem, system or component services " Service-oriented architecture (SOA) is not something you can buy in the market, also is not just a building methods, including technologies, practices and methods more. In the SOA environment, applications, business logic or individual functions can be exposed as Web services, internal and external use, and even. Web services are designed to support the corporate network through an interoperable machine-to-machine interaction. Web services have an interface that simply describes the Web Service Definition Language (WSDL) specifications. It will use XML messages directly like Simple Object Access Protocol (SOAP) protocol of the other services. SOA services are stored in the registry service to enable consumers to find and invoke the service. It uses a standard implementation of its mandate, Universal Description, Definition and Integration (UDDI). Because of the loosely coupled nature of SOA, its service interface is to achieve independence. These Web services can be created by other services do not know the underlying implementation of new business services. Each Web service Quos has with its allies. Improve the quality of service (Quos), is such as availability, accessibility, integrity, performance, reliability, management and security. SOA can help developers and enterprises to provide a flexible, reusable and interoperable IT environment so that they easy to maintain in the future. (Liu, et al., 2005)Service-oriented architecture is defined as a set of principles of systems development and use of calculated phase. The main objective of SOA is to suit the services package, can be used in multiple business areas. It supplies as a complete SOA platform for Web-based consumer-related services. SOA is usually deployed in the operation of enterprises in ...