creation of interfaces that allow for communication with semantic data models. In
dynamic packaging applications, Web service-based solutions have the following
advantages:
??? loosely coupled integration of tourism information systems leading to reduced
development costs and more flexibility, and
??? reduced dynamic packaging applications??™ complexity due to the use of standardized
interfaces.
Web services are easier to design, implement, and deploy than any other traditional
distributed technology, such as RPC and CORBA. At the foundation of Web
services architecture are software standards and communication protocols such
as XML; Simple Object Access Protocol (SOAP) (World Wide Web Consortium,
2002); Hyper Text Transfer Protocol (HTTP); Universal Description, Discovery,
and Integration (UDDI) (UDDI, 2002); and Web Services Description Language
(WSDL) (Christensen, Curbera, Meredith, & Weerawarana, 2001), which allow
information to be accessed and exchanged easily among different programs. These
technologies allow applications to communicate with each other regardless of the
programming languages they were written in or the platform they were developed
for.
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