For example, it discusses logical and physical database design.

例如，它讨论逻辑和物理数据库设计。

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This simplifies the storage estimate that eases the physical database design.

这简化了存储估算，进而简化了物理数据库设计。

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Such features can help administrators fine-tune their physical database design.

这些特性有助于管理员更好地调整物理数据库设计。

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