如果企业愿意，可以通过两种做法来保护自己：保留更多的库存，以及在更多分散地区增加供应商。
If they wish, companies can do two things to protect themselves: hold more stock, and source parts from a larger number of suppliers in dispersed locations.
您可以略过这一步并将数据库存储保留在实例主目录中。
You could skip this step and leave the database storage in the instance home directory.
管理库存，保留销售记录，并根据公司和客户的需求确定数量，产品线和产品的新鲜度。
Manage inventory, keep records of sales and determine amount, product line and freshness of products according to company and customer requirements.
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