计算机科学 ›› 2017, Vol. 44 ›› Issue (Z6): 470-474.doi: 10.11896/j.issn.1002-137X.2017.6A.105
陈冰川,陈蔼祥,吴向军,李磊
CHEN Bing-chuan, CHEN Ai-xiang, WU Xiang-jun and LI Lei
摘要： 数据库设计是信息系统需求分析到系统实现中的一个关键环节。传统的数据库设计方法需根据需求分析阶段的结果,依赖人的构造性思维抽象出对象和关系,由于对所需数据结构和关系的描述能力不足,缺少对数据项之间关系的描述,导致数据关系不明确,数据库设计结果容易出现偏差。在新的数据库设计工具——数据源向图的帮助下,对象、关系以及各数据项之间的关系能被直观、简洁、准确地表示,同时其也能极大地消除各种关系不明确而带来的二义性问题,可有效提高信息系统实现的效率。
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