There are special tools for database applications and developing, which always lower the speed of data access and processing while accessing database with hierarchical interface.
数据库应用与开发都有专门成熟的工具，但是在利用层层接口去访问数据库时却往往影响了数据的访问、处理速度。
There are special tools for database applications and developing, which always lower the speed of data access and processing while accessing database with hierarchical interface.
数据库应用与开发都有专门成熟的工具，但是在利用层层接口去访问数据库时却往往影响了数据的访问、处理速度。
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