逻辑系统模型(Logical system models) 描述系统是什么或系统必须做什么-而不是系统将如何实作。 因为逻辑模型描述一个系统基本的需求,它们有时称做基本系统
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Categorizing these models by functional behavior, logical compared with physical structure, and internal behavior states will produce a useful record of the overall architecture for the system.
按照功能行为、逻辑结构与物理结构的比较及内部行为状态对这些模型进行归类,可得到有用的系统总体体系结构记录。
These attributes were mapped to source system logical data models in order to ensure that attributes were available in the source systems that were to feed the data warehouse.
这些属性被映射到源系统的逻辑数据模型,从而确保能够在源系统中找到提供给数据仓库的属性。
Improved communication: Models omit implementation detail that is not relevant to understanding the logical behavior of a system.
提高沟通性:模型省略了与了解系统逻辑行为不相关的实现细节。
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