It has also brought forward an integrated file management system and the data management ways of multiple index and hash link-table. Furthermore, it analyzed the querying efficiency of historical data in theory.5.
重点研究了磁盘历史数据库高效的存储和查询方法；改进了传统时间信息的组织方式；提出了集成文件管理体系以及多级索引和哈希链表的数据管理方式；并在理论上分析了数据文件的查询效率。
参考来源 - 流程工业历史数据库的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
Multiple index scans in the optimizer are another big win for OLTP.
优化器中的多索引扫描是OLTP的另一大赢点。
It is recommend to create multiple Index Update Tasks for related packages and folders.
我们建议为相关包和文件夹创建多个Index Update Tasks。
The filter design of a class of uncertain systems with multiple index constraints is studied.
研究了一类不确定系统的滤波器多指标设计问题。
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