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WEB SERVICE DISCOVERY SYSTEMS FOCUSING ON SYSTEMS THAT SUPPORT QOS

WEB SERVICE DISCOVERY SYSTEMS FOCUSING ON SYSTEMS THAT SUPPORT QOS

Author: VIKAS PORWAL*, ,

*M.Tech in C.S., Singhania University (Rajasthan) India.

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Abstract

Service-oriented Architecture supports software to be composed from services dynamically. With the growing popularity of web services, web services standards enable the development of large-scale applications in open environments. To deploy web services, quality of service (QoS) becomes a significant concern for service consumers and providers for service discovery. QoS-based web service discovery mechanisms will play an essential role in service-oriented architectures, as e-Business applications want to use services that most accurately meet their requirements. However, representing and storing the values of QoS attributes are problematic, as the current Universal Description, Discovery and Integration (UDDI) was not designed to accommodate these emerging requirements. To solve the problems of storing QoS in UDDI and aggregating QoS values through the tModel approach. The aim is to study these approaches and other existing QoS tModel representation for their efficiency and consistency in service discovery. In this paper, we present an overview of web service discovery systems, focusing on systems that support QoS. The article also elaborates on open issues relating to such discovery systems.

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