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请问有谁在这里对ERD(entity relationship diagram)熟悉的？

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电梯直达

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发表于 2013-9-6 09:09 AM |只看该作者 |倒序浏览

如题：请问有谁在这里对ERD(entity relationship diagram)熟悉的？

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你终究不属于我

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发表于 2013-9-6 11:37 PM |只看该作者

直接把问题po上来吧，有知道的人也好回答啊

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stanley

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发表于 2013-9-8 09:20 AM |只看该作者

As the dealer of XYZ cars in Malaysia since 1990, Auto Motors (AM) has been synonymous with performance and sheer driving pleasure. And they look forward to bringing even more of the innovative services and products that have redefined luxury motoring. To further improve upon its already outstanding service, AM is preparing to transfer its manual customer sales order system to a web-based customer sales ordering system.

The main details required for the AM system are as follow:
-Sales order number
-Type of car
-Model
-Customer details
-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)

The total costs of the car include the cost of the car and the options. 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. A copy of the current manual order form is depicted in the Figure.