One of the differentiating characteristics of engineering database system(EDBS)is the need to handle complex object.
工程数据库管理系统一个不同的特性是要处理复杂对象。
The paper also discusses the structure of EDBS, explains the defects of the loosely-coupled structure, and concludes that it is the closely coupled structure that is of high quality.
讨论了EDBS的结构，叙述了松散耦合结构的不足，认为紧密耦合才是一种性能良好的结构。
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