另外还对数据的更新和历史数据的存取给出了算法及建议。

Furthermore, the algorithm on data renewal and historical data management was devoted.

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在此基础上着重提出了针对实时交通流和空间数据的存取方式。

Some data access modes are proposed, specially for real-time traffic flow data and spatial data.

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然而，由于空间数据的特殊性使得传统索引方法不能很好地适应空间数据的存取。

However, traditional index methods are not well suited to access spatial data objects because of the special properties of spatial data.

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