Talk-ServiceOrientedComputing

Talk-ServiceOrientedComputing - Service Oriented Computing...

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Service Oriented Computing Burr Watters Tasha Wells April 5, 2004
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Overview What Service Oriented Computing? Service Oriented Architecture Web Service Componentization Service Composition BPEL4WS Coordination Contracts and Port Types Web Service Transactions
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What is Service Oriented Computing? It is the paradigm for distributed computing to enable application networks to be built using services as fundamental elements for developing applications.
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Service Oriented Architecture
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Management Level Operations Management: Support critical applications that require organizations to manage the service platform, the applications and the deployment of services. The organization responsible for these functions is known as the service operator. Market Management: Administration of the marketplace and maintenance to guarantee the administration is open for business. The creator/maintainer of a marketplace is known as the market-maker.
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Composition Level Allows consolidation of multiple services into a single composite service using the following functionality: Coordination: Controls the execution of component services and manages the dataflow between them. Monitoring: Monitors events or information produced by component services. Conformance: Ensures consistency of composite services by matching parameter types with parameters of component services imposes constraints on component services to enforce business rules. Quality of Service (QoS) composition: Combines the component’s QoS to determine the composite QoS such as overall cost, performance and security.
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Description/Integration Level Creation of composite service through the following functions: Service description: Communicates the service’s capabilities/functionalities, interface, behavior, cost and quality of service. Service discovery: Locates appropriate services using requirements and selection criteria. Service delivery: Invocation – request for specified service according to agreed terms and conditions. Provision – the agreed-upon service is supplied within the period agreed to in the contract. Suspension – establish point where the service will no longer be needed.
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Talk-ServiceOrientedComputing - Service Oriented Computing...

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