...关联称作单向关联 ( Uni-directional Association )在两个方向上都有导航表示的关联称作双向关联 ( Bi-directional Association )。图1中"保险单"到"保险单上的项目"是单向关联。
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Figure 7 shows an example of an overdrawn accounts report with a uni-directional association.
图7显示单向关联的透支财务报告的一个实例。
I was forced to do it this way because the association is uni-directional — employee rows know about their position rows but not the other way around.
因为关联是单向的——employee那些行知道它们的位置行，但反过来就不行——所以我必须这么做。
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