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| Chinese | English |
| 关系型数据库 | relational database A collection of digital information items organized as a set of formally described tables from which the information can be accessed or reassembled in different ways without reorganizing the tables (以一组正则表达式描述的表的形式来组织数字信息的集合。通过表，信息可以通过不同的方式被访问和重组，而不用重新组织表。) |
| 数字土地模型 | digital land model A representation of a surface's topography stored in a numerical format. Each pixel has been assigned coordinates and an altitude (将地表的地形影像以数字格式储存。 每个像素均指定了坐标和高度。) |