| 三层体系结构下空间数据缓存策略研究性 |
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| 引用本文： | 蒋红燕,吕晓华,马名军,李滨,林大贵.三层体系结构下空间数据缓存策略研究性[J].海洋测绘,2012(1):35-38. |
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| 作者姓名： | 蒋红燕 吕晓华 马名军 李滨 林大贵 |
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| 作者单位： | [1]解放军信息工程大学测绘学院,河南郑州450052 [2]海军海洋测绘研究所,天津300061 [3]海军司令部航海保证部,天津300042 [4]78155部队,四川成都610036 |
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| 摘 要： | 对数据缓存技术进行总结分析的基础上,首先提出了三层体系结构空间数据缓存模型,并针对各软件层空间数据管理及访问的特点,详细论述了各层空间数据缓存的实现方式;然后论述了三层体系结构中空间数据不一致的原因及各层空间数据一致性维护策略;最后对提出的三层体系结构下空间数据缓存策略进行了评价分析。
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| 关 键 词： | 空间信息系统 三层体系结构 数据缓存 空间数据缓存 空间数据一致性 |
Research on Special Data Caching Method in Three-tier Architecture |
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| JIANG Hongyan,LU Xiaohu,MA Mingjun,LI Bin,LIN Dagui.Research on Special Data Caching Method in Three-tier Architecture[J].Hydrographic Surveying and Charting,2012(1):35-38. |
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| Authors: | JIANG Hongyan LU Xiaohu MA Mingjun LI Bin LIN Dagui |
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| Institution: | 1.Institute of Surveying and Mapping,Information Engineering University,Zhengzhou 450052,China;2.Naval Institute of Hydrographic Surveying and Charting,Tianjin 300061,China;3.The Navigation Guarantee Department of Naval Headquarters,Tianjin 300042,China;4.78155 Troops,Chengdu 610036,China) |
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| Abstract: | Based on the summarizing and analyzing of data caching technology,this article presents three-tier-architecture spacial data caching model,and particularly addresses the mode of realizing data caching in every tier aiming at the feature of spacial data management and access in every software tier.In the following,it describes the reason for causing inconsistency of spacial data in three-tier architecture,as well as the measure maintaining consistency of spacial data in every tier.Finally,the article evaluates the spacial data caching method in three-tier architecture mentioned above. |
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| Keywords: | three-tier architecture data caching spacial data caching spacial data consistency |
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