This logic data model makes it impractical to directly load database tables by using bulk load tools that are described in the fourth method.
这种逻辑数据模型，使得使用第四种方法中描述的块载入工具直接载入数据库变得不现实起来。
This logic data model makes it impractical to directly load database tables by using bulk load tools that are described in the fourth method.
这种逻辑数据模型，使得使用第四种方法中描述的块载入工具直接载入数据库变得不现实起来。
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