Course Outline

Overview of Web Services for Government

  • Why do we need Web Services in the public sector?
  • Service-Oriented Architecture Principles (SOA) and their relevance to government operations.
  • The significance of HTTP and XML in facilitating interoperability and data exchange for government.
  • Simple Object Access Protocol (SOAP) and its role in secure, reliable messaging for government services.
  • Web Service Description Language (WSDL) as a standard for defining service interfaces for government applications.
  • Universal Description, Discovery and Integration (UDDI) for enhancing service discovery and integration within government agencies.
  • The WS-* profiles and their importance in ensuring interoperability and security for government web services.
  • Representational State Transfer (REST) and its application in lightweight, scalable government web services.

The XML Technology for Government

  • Why XML is essential for data representation and exchange in government web services.
  • The XSD Schema and its role in defining structured data formats for government applications.
  • Data representation using XML to ensure consistency and interoperability across government systems.
  • XSLT-based XML transformations to enhance data processing and presentation for government services.
  • A case study on the use of HTTP and XML in web services for government operations.

The SOAP Protocol for Government

  • The messaging model of SOAP and its application in secure, reliable communication for government services.
  • Namespaces in SOAP to ensure clear data identification and avoid conflicts in government systems.
  • SOAP over HTTP as a standard protocol for web service interactions within government agencies.
  • The SOAP Envelope structure and its components for encapsulating messages in government applications.
  • The Message Header in SOAP, used for metadata and processing instructions in government services.
  • The Message Body in SOAP, containing the actual data payload for government transactions.
  • SOAP Faults to handle errors and exceptions in a standardized way for government web services.
  • Attachments in SOAP to support binary content transmission within government systems.

Web Services Description Language (WSDL) for Government

  • Web Services as Component-Based Software and their modular design for efficient government operations.
  • The need for an Interface Definition Language (IDL) in the context of distributed computing for government services.
  • Web Services Description Language (WSDL) as a standard for defining service interfaces in government applications.
  • WSDL Information Model to describe the structure and behavior of web services for government use.
  • The Abstract Model -- Service Semantics, defining the logical operations and data types in government services.
  • Message Description in WSDL to specify the format and content of messages exchanged in government systems.
  • Messaging Styles supported by WSDL for different communication patterns in government web services.
  • The Concrete Model -- Ports, Services, and Locations, defining the physical endpoints and addresses for government services.
  • Extending WSDL with Bindings to support various transport protocols and message formats in government applications.
  • Service Description in WSDL to provide comprehensive documentation for government web services.

Handling Binary Content for Government

  • The WS-I Attachments Profile for managing binary data in government web services.
  • Using base64Binary encoding to embed binary content within XML messages for government applications.
  • MIME Attachments to handle large binary files and optimize performance in government systems.
 14 Hours

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