组合关系(Combination relationship) 教材前言1,m 封面目录章节习题1 n 两个对象间的二元关联分为(1:1)、 (1:M1)、 (M:N); 尽量避免使用多元关联。
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The examples indicate that it fits combination relationship, improves precision, and acquires better effect.
实例表明,利用该模型对协联关系进行拟合,提高了精度,取得了较好的效果。
In the logging curve, the seams could be divided mainly according to the extent abnormal, pattern abnormal and special pattern combination relationship of the logging curves.
测井曲线方面,主要根据测井曲线的幅度异常、形态异常及特殊形态组合关系等划分煤层。
In relational databases the attributes contained in an associative table are traditionally the combination of the keys in the tables involved in the relationship.
在关系数据库中,关联表中包含的属性传统上是关系中涉及到的表中的键组合。
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