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Data layer realizes data index, data operation and data verification.
实现数据检索、数据操作、数据验证。
youdao
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In order to improve the query speed, the work discussed the data index too.
为了提高数据查询的速度，对数据索引也做了部分探讨。
youdao
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In order to improve the query speed, the work discussed the data index too.
为了提高数据查询的速度，对数据索引也做了部分探讨。
youdao