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1.The main work of post-ETL is to map center warehouse into data mart. The person working in pre-ETL needs to be familiar with sourcing system and center warehouse model.
后ETL的主要工作是中央数据仓库到数据集市的映射，这只需熟悉中央数据仓库和集市模型即可。收藏指正
2.This article narrates briefly the overall process of the production of 1:5 000 scale digital line graph DLG,digital orthophoto map DOM,digital elevation map DEM products,and discusses the operating standard,working method,key technique,precision analysis and production method of 3D product.
简述了厦门市1∶5 000比例尺数字地形图DLG、数字正射影像图DOM、数字高程模型DEM(简称3D)产品生产的全过程; 论述了3D产品生产过程中的作业标准、作业方法、关键技术及精度分析,并对3D产品的生产方法进行了讨论。收藏指正
3.An attempt to map 1:1000 topographic map based on deeply-enlarged 1 :33000 aerophotos on JX-3 analytical plotter is presented in this paper, working method and concerned technical measures are introduced here. According to the principle of analytical model absolute orientation, the author compares two field point distribution solution, analyses the precision both in theory and practice, and give the result.
介绍试用1:33000比例尺航测资料,在JX-3解析测图仪上高倍放大航测1:1000比例尺地形图的成图方案和应采取的技术措施,运用解析法模型绝对定向的原理,在全野外布点时采用两种方案对照比较,进行理论和试验精度的分析,并给出试验结果.收藏指正
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