以下为句子列表:
英文: Abstract: Temporal relational database model is extended from relational database by adding time processing,and Temporal object-orient database model is extended from object-orient database by adding time processing.
中文: 文摘:时态关系数据库在关系数据库的基础上扩充了对时间数据的处理,而时态面向对象数据库则是在面向对象数据库的基础上扩充了对时间数据的处理。
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英文: Combining CAD, GIS and DBMS, this paper analyzes the geometric network model, the component of urban planning road features, and designs a database model of urban planning road information system.
中文: 摘要分析了城市规划道路要素的构成,并在几何网络模型基础上,对城市规划道路信息系统数据库进行了设计。
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英文: In the application systems based on relational database, the design of database model directly determine the integrity, accuracy and coincidence of database, and has important affects on the performance and efficiency of the database.
中文: 摘要以关系数据库为基础的应用系统中,数据库模式的设计优劣直接决定了数据的完整性、准确性和一致性,对数据库的性能和效率也有着至关重要的影响。
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