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引用次数: 1
摘要
VGUIDE (Visual and General User Interface for Database Environments)是一个基于客户机/服务器模型的集成环境，用于开发和运行分布式信息系统。其主要特点有:(1)用于开发数据库应用程序的第四代语言(4GL)，降低了系统开发成本。(2)可以从小型系统扩展到重载大型系统的实时控制监视器，以及(3)可以在多供应商机器和操作系统之间移植的4GL应用程序。首先，我们给出了VGUIDE用于开发分布式信息系统的技术概述。这涉及到集成的中间件环境、各种客户机/服务器模型和灵活的应用程序控制机制。接下来，对VGUIDE的性能进行了测试。然后用VGUIDE进行了实例说明。并对VGUIDE的有效性进行了讨论。
VGUIDE: 4GL application platform for large distributed information systems
The Visual and General User Interface for Database Environments (VGUIDE) is an integrated environment for developing and running distributed information systems based on the client/server model. Its main features are: (1) fourth-generation language (4GL) for developing database applications that reduce system development costs. (2) a real-time control monitor that can be scaled from small systems to heavily loaded large systems, and (3) 4GL application programs that can be ported among multi-vendor machines and operating systems. First, we give a technical overview of VGUIDE for developing distributed information systems. This involves an integrated middleware environment, various client/server models, and flexible application control mechanisms. Next, the performance of VGUIDE is examined. then, actual examples with VGUIDE are explained. Also, the effectiveness of VGUIDE is discussed.
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