该模型能有效降低数据冗余，提高数据访问效率。
It can reduce data redundance and improve data access efficiency.
并且通过一次定位即可查询到与数据相关的所有信息，极大地提高了数据访问效率。
All related information of the required data may be obtained through one direct location, which improved the inquiry efficiency greatly.
数据访问效率低下已成为多层体系结构应用软件的主要性能瓶颈，而数据库连接池技术是解决这一问题的主要途径。
One major performance bottleneck of the multi-layer application software is low data access efficiency; connection pool technology is an effective way to solve this problem.
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