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stanley 发表于 2013-9-11 12:50 PM
有点看不清楚@@那个insurance 不是在customer 哪里的么?
还有那个option是什么的option?
不好意思哦新 ...
我的不一定对的,尤其是哪个linkage的one to one, many to one的relation, 所以只是参考罢了。
每个人的理解能力不同,以我的了解啦,我认为:
"Customer can request to buy insurance (at a special in house rate) but the rate will varies in relation to the age of the driver.The first named driver is assumed to be the car owner unless otherwise stated.A maximum of 3 drivers (including the owner) can be registered for a given car"
所以insurance是填在你买的时候的order form,而不是加在customer details里。一个order form只有一个customer detail。(p/s:我是根据database的table来看啦,类似下图)
而optional是:
“Up to six optional extras per car (for example: leather seats, sun roof, 8-speed automatic transmission, sport rim, adaptive LED headlights, navigational assist system)” |
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