Every aggregation type corresponds to a datastructurediagram and an entity relationship model.
每种聚合类型对应一种数据结构图和ER模型。
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The paper presents a new way which can reduce the deficiency ot depth section design that is according to the structurediagram and real-time drilling data.
Defects of representation for datastructure is pointed out firstly , and an object-oriented solution is put forward, finally an OOA class diagram of linear datastructure system is given.