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Web Services

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Web Services & UDDI ... for building distributed databases that enable interested parties to discover each other s Web services. Provides easy discovery, ... – PowerPoint PPT presentation

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Title: Web Services


1
Web Services UDDI

  • Tarakeshwar

2
  • Web services are distributed components that
    communicate
  • using standard protocols such as Simple Object
    Access
  • Protocol (SOAP) and HTTP.
  • Web services exposes callable API functions,
    better known
  • as Web Methods over the Internet.
  • Web services publish details of their interface
    using XML
  • vocabulary called Web Services Description
    Language(WSDL).

3
  • WSDL describes the interface for the Web
    service.
  • WSDL is an XML-based vocabulary that describes
    the set
  • of SOAP messages that a Web service supports.
  • Every Web service has an associated WSDL file
    that
  • documents the Web methods including their
    arguments
  • and return types.

4
  • Generates a proxy class that can be used by the
    Web
  • service consumers for communicating with the
    Web
  • service.
  • .NET also provides a default service description
    screen that
  • summarizes the WSDL information in a readable
    format.
  • Automatic generation of XML based WSDL.
  • Avoids handling SOAP responses and requests.

5
  • The proxy class assembles the requests and
    responses
  • in the correct format.
  • Web services are stateless.
  • Web services are platform and language agnostic.

6
  • Universal Description, Discovery and Integration
    (UDDI)
  • is a specification for building distributed
    databases that
  • enable interested parties to discover each
    others
  • Web services.
  • Provides easy discovery, sharing, and reuse of
    Web
  • services and other programmable resources.

7
  • UDDI sites publish a pair of SOAP-based APIs
  • Inquiry API
  • Publisher API .
  • UDDI services enables companies to run their own
  • private UDDI service for use on the corporate
  • intranet or extranet.

8
  • UDDI Services helps companies organize and
  • catalog programmatic resources.
  • The four core entities that you need to model
    when
  • developing UDDI services are
  •     Provide
  •         Service
  •          Binding
  •          tModel

9
(No Transcript)
10
  • .NET provides high-level tools to query UDDI
    business
  • registries and generate wrapper classes that
    allow
  • them to place calls to the Web services.
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