矿产资源与环境遥感本底数据库的设计与建设

为了更有效地组织和管理海量遥感数据，在分析已有的影像数据组织和管理方式的基础上，分析了遥感影像本底数据库的功能需求，将数据库系统划分为四大功能模块，采用分布式三层C\S结构为系统结构。根据确定的能满足系统查询检索需要的影像元数据信息，设计了影像数据表。以Oracle数据库为数据库平台，利用SuperMap Objects组件式地理信息系统开发平台，通过内置于SuperMap Objects的Supermap SDX+空间数据库引擎访问数据库，使用C#2.0作为开发语言，开发实现了矿产资源遥感影像数据库系统，在数据入库过程中系统自动为影像数据建立金字塔和默认的空间索引。该数据库系统支持海量、多源数据管理和多尺度查询，实现了数据类型、数据完整性的检查和不同数据类型的导入，按照数据源、数据获取时间、影像名称和经纬度4种方式查询数据，根据需要导出影像、影像的快速浏览、用户管理、数据的安全管理、数据库维护、数据扩充等功能。

The design and implementation of remote sensing image background database for mineral resources based on Oracle and SuperMap SDX+

In order to organize and manage large volumes of remote sensing data more effectively, the authors have made an all-round study of the present style in organization and management of image data. The functional requirement was analyzed for remote sensing image background database. The database system was divided into four major functional modules, i.e., the import and upload module, the query and search module, the export and download module and the manage module. The distributed three-tier C\S structure was adopted as the system structure. The metadata information which can meet the needs of search and query was chosen. The database table was designed for the storage of data. The SuperMap SDX+ spatial database engine was employed in this study. The pyramid technology and spatial index technology were utilized, which constituted vital technologies in this study. The building of the pyramid will benefit the quick view of the image. The creation of the spatial index can help query image more efficiently. Oracle database was used as the database platform, and C#2.0 was used as the development language. The SuperMap Objects component geographic information system was utilized for the development of platform, the database was accessed by Supermap SDX+ spatial database engine which was built in SuperMap Objects, and the remote sensing image database system was developed and implemented for mineral resources. The system automatically creates the pyramid and the default space index for image data when the data are imported into database. The