摘要
讨论了PDA环境下空间数据索引技术,针对RAM存储卡特点,提出了一个格网索引思想的空间数据索引方案——"类哈希"索引,并设计了基于PDB(palm OS database)的一个实现。实验表明,在PDA环境下,基于PDB的"类哈希"索引技术,能显著加快空间数据的加载速度。
The technics of spatial data index in PDA is introduced. According to the characteristics of RAM, a technique of Grid based ＂Hash - like index＂ is introduced too. Then a rurmable system based on PDB （palm OS database ） is designed. The experiment shows that it can accelerate the spatial data loading observably.
出处
《海洋测绘》
2008年第5期17-19,共3页
Hydrographic Surveying and Charting
