Enterprise application systems
|Keywords||Client / server Multi-tier distributed Web computing model Distributed Object Technology DDBS Middleware WebDDBAS Hospital Information System|
The distributed computing model , distributed object technology and distributed database technology is often used in building enterprise-class applications . In this paper, the enterprise-level application design and construction of the system - Hospital Information System HIS , proposed in the distributed computing model of multi-tier distributed WEB database system architecture ( WebDDBAS ) , the introduction of the upcoming distributed object technology to the Web , Web technology , and distributed object technology, the combination of both , leading to the formation of a flexible multi-tier distributed Web computing model . The article first analyzes the course of development of the computing model ; research \the goal of distributed database design ; through the new needs of the enterprise application systems the framework WebDDBAS ; then given WebDDBAS architecture , and discusses the layers of the main features and distributed object technology , and layers implementations ; Finally, the hospital information system HIS building instructions WebDDBAS system in the development of the actual system .