Therefore, we will undertake a study of our approach
to dynamic packaging application development by presenting its architecture.
We propose an architecture for dynamic packaging applications composed of six
layers: (1) tourism information systems, (2) tourism data sources, (3) data model
mapping, (4) data consolidation, (5) shared global data model, and (6) dynamic packaging
engine. The relationships between these layers are illustrated in Figure 1.
To better understand the purpose of each architectural layer, we will briefly describe
them in this section and give a detailed presentation in the following sections.
Develop ng Dynam c Packag ng Appl cat ons
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???. Tourism. information. systems. The information needed to build dynamic
packages is stored in tourism information systems, such as CRS, GDS, HDS,
DMS, and Web sites.
???. Tourism.data.sources. Each tourism information system makes travel data
available through data sources in one or more formats, such as HTML, XML,
RDF, flat files, relational model, and so forth.
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