Logical integrity refers to the logical structure of the database protection, including the semantic integrity and operational integrity.

逻辑完整性是指对数据库逻辑结构的保护，包括数据的语义完整性与操作完整性。

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Record-based logical models define the overall logical structure of the database as well as higher level description of its implementation.

基于记录的逻辑模型定义数据库的整个逻辑结构以及实现的更高级描述。

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When planning the overall logical storage of the database structure, take into account the effects that this structure will have when the database is actually created and running.

当编制总体数据库逻辑结构计划，这个计划的重要性在于，它将会影响数据库的创建与运行。

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