摘要
园林树木网络数据库系统采用三层结构设计,即程序逻辑结构分为用户界面层、业务逻辑处理层和数据存储层。三层在实际的物理结构上也是独立的。业务逻辑处理层负责与数据库的连接,它包含与数据库连接的JavaBean,分别为植物学查询Bean、生物学特性及观赏特性查询Bean。所有的数据库操作均由用户界面层调用相应的JavaBean来完成,提高了系统的安全性和可移植性。用户界面层负责返回用户查询所得的结果。查询中采用输入关键词→粗略查询→详细查询和图片查询的逻辑进程,大大提高了查询的速度和效率。
The network database of landscape trees was designed as the three-stratum structure comprised of user interface stratum,logical processing stratum of business,and data storing stratum.The three stratums were independent their actual physical structures.The logical processing stratum of business was responsible for the link to the database and thus included the JavaBean demanded,which were consisted of search Bean for botany,biological bean and ornamental features bean.All the database operations were completed by applying for the corresponding JavaBean with the help of the user interface stratum,therefore greatly improving the security and transplant ability of the system.The user interface stratum took charge of returning the results of the user＇s query.In searching process,by introducing the logical steps of keywords input→wide scan→accurate location and pictures searching,it enormously enhanced the rate and efficiency of an query.
出处
《林业科技开发》
2010年第5期100-103,共4页
China Forestry Science and Technology
