基于JSON的异构数据库整合研究.docVIP

基于JSON异构数据库研究 摘 要 从数据库诞生到现在，经过长期的积累，互联网里有着相当数量的异构数据库系统。由于现代信息化建设的需要，许多系统需要去访问异构的数据库系统。对于以数据库为心的系统的开发者而言，因为异构数据库的存在，他们在开发、维护升级的成本比常规单一数据库系统要高的多。 由于JSON是一种独立于任何计算机语言且与平台无关的通用数据交换格式，使用JSON作为数据交换格式，来整合异构数据库系统成为了一种可能。本文在现有的基于XML的异构数据库整合方法的基础上提出了基于JSON的异构数据库系统整合方法可以大幅度的降低异构数据系统的开发、维护升级成本，避免异构数据库系统带来的各种弊端。 研究了JSON与异构数据库数据的映射JSON作为异构数据库整合的数据交换格式 将POJO转换为JSON； JSON与异构数据库之间的映射算法。 选择了三个异构的数据库系统，通过编码实现了基于JSON的异构数据库系统中间件。使用BadBoy和JMeter对中间件进行了测试。 JOSN；异构数据库；POJO；Java；ORMAbstract Born from the database to the present, long-term accumulation of the Internet with a considerable number of heterogeneous database systems. Due to the needs of theconstruction of modern information technology, many systems need to accessheterogeneous database systems. For developers, database-centric system, becauseof the presence of heterogeneous databases, their development, maintenance andupgrade costs higher than the conventional single database system. Since JSON is a universal data exchange format that is independent of any computer language and platform-independent, using JSON as a data exchange format, to integrate heterogeneous database system has become a possibility. On the basis ofthis idea, proposed in the existing heterogeneous database system XML-basedintegration method based on JSON-based heterogeneous database systems integration, the approach can significantly reduce the development of heterogeneous data systems maintenance and upgrade costs and avoid all the disadvantages ofheterogeneous database systems, improve the efficiency of program development. This paper studies the JSON and heterogeneous database data mapping algorithmspecific to include the following: the JSON as the data integration of heterogeneous database systems to exchangethe feasibility of the format; convert JSON into POJO; convert POJO into JSON; JSON with heterogeneous database mapping algorithm. In order to verify the validity of the method, select the three heterogeneous database system, by encodin