For a long time researchers only focus on disk-based index, but research on memory-based index is of great value today because of the mass memory condition.
以往大部分学者都集中研究磁盘索引，但其实在目前大内存的环境下对内存索引的研究也是非常必要。
This process can take a long time based on the size of the index, the CPU, and the amount of memory available.
根据索引、CPU以及可用内存的大小，这个过程可能需要较长的一段时间。
In the part of index renewal, this paper proposed three dynamic index updating strategies based on order memory, and a kind of index dynamic updating algorithm based on chain memory.
在索引更新部分本文提出了三种顺序存储方式下准动态的索引更新策略，一种链式存储格式下索引动态更新的算法。
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