| 城市环境信息系统数据库设计及最小覆盖算法 |
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| 引用本文： | 王雄,孙水裕,王孝武.城市环境信息系统数据库设计及最小覆盖算法[J].计算机与数字工程,2004,32(4):34-36. |
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| 作者姓名： | 王雄 孙水裕 王孝武 |
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| 作者单位： | 广东工业大学环境科学与工程学院,广州,510090 |
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| 摘 要： | 本文设计了城市环境信息系统(CEIS)数据库，并探讨了该数据库的三范式问题，最后提出了数据库函数依赖的最小覆盖，解决了数据库的冗余问题。
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| 关 键 词： | 关系数据库 城市环境信息系统 最小覆盖 |
| 修稿时间： | 2004年1月6日 |
Design of City Environmental Information System Database and Its Minimal Cover |
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| Wang Xiong,Sun Shuiyu,Wang Xiaowu.Design of City Environmental Information System Database and Its Minimal Cover[J].Computer and Digital Engineering,2004,32(4):34-36. |
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| Authors: | Wang Xiong Sun Shuiyu Wang Xiaowu |
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| Abstract: | The database of city environmental information System (CEIS) has been designed. The problems of 3 normal forms (3NF) with database have been discussed firstly. And then the minimal cover of function relay of database has been put forward in order to resolve the problem of redundancies with database. |
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| Keywords: | Relation Database City Environmental Information System Minimal Cover |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
