流行的观点认为 EDM 需要海量数据库来存储组织所处理的所有数据，但是事实上并非如此，EDM 仅仅是一个公共逻辑数据模型。
Unlike the popular myth that EDM requires a mega-database that stores all the data that an organization deals with, it is only a common logical data model.
数据库的业务逻辑将通过child - parent层次结构把这些文档组织成讨论线索。
The business logic of the database arranges these documents into discussion threads, with a child-parent hierarchal structure.
在数据库中，数据被组织到叫做表 的逻辑单元中。
Within the database, the data are organized into logical units called tables.
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