基于Internet的直接网络数据服务的基本概念与技术框架

Direct Internet Data Service Fundamental Concepts and Technical Framework

直接网络数据服务为计算程序提供了一种通过Internet直接访问远程数据的手段 ,它在通讯和计算技术上分别以SOAP协议和Java跨平台计算能力为基础。本文分析了Internet应用技术的现状和发展 ,结合当前数据交换技术和化工数据应用的特点 ,提出了一种新的化工数据应用方法 ,即建立基于Internet的直接网络数据服务的计算模型。实现此计算体系涉及多方面的数据协议和计算技术 ,其中最重要的思想是通过构建一个易用的数据规范框架 ,以简化整个体系的用户使用界面 (包括编程接口和访问语法 )。该框架定义了数据的描述规范、存储规范、查询规范、传输规范和使用规范。该计算模型主要包括 3个部分 ,即服务器端的数据库模型、基于SOAP的数据传输模型和客户端的应用编程接口。该系统以远程程序为数据消费对象 ,最终将实现对数据库透明的访问能力和可扩充的分布服务能力。在此基础上 。

Direct Internet data services provide user program the capability to access remote data service via Internet. It is accomplished by SOAP protocol in respect of communication and by cross-platform technique of Java in respect of distributed computing. The current situation and progress of Internet and the features of chemical data services are discussed in this paper. A novel scheme of direct Internet data service and its technical framework are proposed with current data exchange technology, which relates to a several of data protocols and computing technologies. The most important ideology of this scheme is to develop a user friendly data protocol framework in order to simplify the data access, in which data protocols on data representation, data storage, data query, data transportation and data consumption, are required. The computing models include server side database model, SOAP-based transportation model and client APIs. It should be emphasized that the final consumers of data services in this scheme are client applications. The remote data can be transparently accessed by the user applications in the architecture developed in this paper. The scheme proposed in this paper can be further extended to the field of remote computing with the advantages of SOAP protocol.