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Development of an object oriented framework for design and implementation of database powered distributed Web applications with the DEMETER project as a real-life example

机译：开发面向对象的设计和实现数据库供电的分布式Web应用程序的框架，并作为真实例子

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We develop an object-oriented framework for generating Internet-distributed database-powered World Wide Web applications. We rely on the proven technology of standard relational databases, but our tools are designed from scratch, aimed especially towards the needs of the Web with low-bandwidth connections. We use a state machine model for the design and implementation of control elements for Web pages with pure HTML. Sufficient complexity within the user interface and powerful database interaction can be achieved without Java, JavaScript or Active-X, even with more than one concurrent session at once. Based on the state machine model, our design language models the application functionality strictly separated from layout and presentation. This approach makes it independent from future changes to HTML, and we can even give an application more than one layout without changing the functional structure, e.g. to satisfy users' needs. The object-oriented structure of the design tools makes the framework extensible. With this technique, a database-powered Web application has been implemented successfully: a Europe-wide product marketing system for rural areas, which is currently in the pilot phase. This system has been constructed under the DEMETER (Distance Education, MultimEdia Teleservices and tElework for farmeRs) project, funded by the European Commission under the 4th Framework programme TURA (Telematics for Urban and and Rural Areas).
机译：我们开发了一个面向对象的框架，用于生成互联网分布式数据库供电的万维网应用程序。我们依靠标准关系数据库的经过验证的技术，但我们的工具是从头开始设计的，旨在旨在朝着带有低带宽连接的网络的需求。我们使用状态机模型来设计和实现Web页面的控制元素，具有纯HTML。在用户界面和强大的数据库交互中，可以在没有Java，JavaScript或Active-X的情况下实现足够的复杂性，即使在一次多于一个并发会话时也可以实现。基于状态机模型，我们的设计语言模拟应用程序功能严格与布局和演示分开。这种方法使其独立于未来的HTML的变化，并且我们甚至可以在不改变功能结构的情况下给出多个布局的应用程序，例如，满足用户的需求。设计工具的面向对象结构使框架可扩展。通过这种技术，已成功实施了数据库供电的Web应用程序：农村地区的欧洲产品营销系统，目前处于试点阶段。该系统已根据Demeter（远程教育，多媒体TeleServices和Farmers）项目，由欧洲委员会根据第4框架计划Tura（城乡远程和农村地区的信息处理）资助。

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