有色金属物性数据库面向服务的体系结构研究与设计

本文在分析目前流行的两层、三层网络数据库体系结构存在的问题的基础上,根据有色金属物性数据库的特点,提出一种基于SOA、多层、分布式体系结构应用开发模型.该模型着重解决以下几个方面的问题：利用软件开发新技术,提出了基于RIA的有色金属物性数据库客户端实现方式,吸取了＂胖客户端＂和＂度客户端＂的优点,解决了传统客户端部署或动态图形绘制等方面的问题 在模型中,增加了服务层,实现了系统服务的对外发布.解决了异构平台、跨系统的业务集成和重组 采用了服务器集群技术,动态的实现了负载均衡,优化了系统性能 改进了数据访问层,增加了O/R映射,屏蔽了下层数据库的细节信息,使系统能够架构在多种类型的数据库上,提高了系统的灵活性.

Research and Design on the Architecture of SOA-based Nonferrous Metal Database

On the basis of analyzing defects of two tiers & tree-tiers architecture database system,a SOA-based,multi-tiers and distributed architecture is put forward according to application characteristic of nonferrous metal database.The model is focused on the problem of the following aspects to solve:the first,using new technologies in software development.The implementation based on the RIA-client in the nonferrous metals database system,which is assimilated the advantages of"fat client"and"thin client"to solve thedeployment oftraditional client-side or dynamic graphics rendering.The second,service tier is increased to implement releasing services of system in the model;business integration and recombination of heteroid platform and system are solved.The third,cluster server technology is used to achieve a dynamic load balancing,and optimize the performance of the system.In the last,the O/R mapping function is increased in the data access tier in order to shield the details of the lower database,which led to make the system adapt various typos of databases and improve the flexibility.With the development of computer technology and extensive application,the database has an in-depth development and application in the various fields.At present,metallurgical and related databases concentrated in the chemical industry,metallurgy,as well as alloy thermodynamic calculations.Foreign thermodynamic database has become perfect after years of development,but the development was subject to restrictions on technology development,there are more defects of these databases.Such as:software portability of the poor,small-scale capacity of the database,query and hit a low rate of recall;Intemet network can not carry out inquiries,the lack of Mineralogy,smelting technology and its technical parameters and technical data,can only compound Thermodynamic calculations.Judging from the current number has been established to support scientific research and scientific capacity to open the database,the database system architecture using stand-alone or Client/Server architecture,the low rate of resource sharing is not conducive to the promotion and use.