J2EE技术在教务管理系统中的应用_职称论文发表网 关键词：J2EE；教务管理；层次模式架构 [gap=390]Keywords:J2EE;Educational administration;Level model structure
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Structure level and model 结构层次和模型
4-level system structure model 四级层次模型
two-level tree structure model 两层树结构模型
three-level data structure model 三层数据结构模型
Please note that the logic applied here depends on the structure of the domain model, and as the level and number of attributes increase, the complexity of conversion increases in the action class.
注意，这里适用的逻辑取决于域模型的结构，随着属性的级别和数量增加，操作类中的转换的复杂性也相应增加。
Figure 2 shows the structure of the SQL model at the schema level.
图2显示了SQL模型的模式结构。
At a conceptual level, the OMG "business Motivation Model" (BMM) also provides a structure to capture and track business results corresponding to business directives.
在概念方面，o MG “ Business Motivation Model ” (BMM)还提供一个用来捕捉和跟踪与业务指示对应的业务结果的结构。
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