When planning the overall logical storage of the database structure, take into account the effects that this structure will have when the database is actually created and running. 当编制总体数据库逻辑结构计划,这个计划的重要性在于,它将会影响数据库的创建与运行。
It is important to plan how the logical storage structure of the database will affect system performance and various database management operations. 这个计划十分重要,数据库的逻辑存储结构将影响数据库的性能和数据库的管理操作。
The physical and logical organization structure of current storage system is static, and static organization structure cannot depict a continuous-changing system. Besides, current storage system lacks corresponding mechanisms satisfying the changing storage requirements. 现有存储系统物理和逻辑的组织是一种静态的结构,而静态组织结构模型不能很好地刻画处于不断变化之中的系统,此外,现有存储系统缺少适应不断变化的存储要求的机制。
In view of the above logical expression process, this paper models by UML process, designs the corresponding physical storage structure and basic geographic event database to get ready for the subsequent geographical events in the application of the spatial data updating. 针对上述逻辑表达过程进行UML过程建模,设计出相应的物理存储结构和基本地理事件库,为后续地理事件在空间数据更新中的应用打下基础。
This paper gives the detailed implementation steps of parallel K-Means algorithm, including the logical flow chart of function modules, and data storage structure of each modules. 本文给出了K-Means算法的并行化详细实现步骤,包括功能模块的逻辑流程图、每个模块使用的数据存储结构。