系统构建的核心是灌区管理数据库，数据库包括空间数据库、属性数据库、超文本数据库多媒体数据库等。

The core of system is the irrigation area management database, Based on the object-oriented method, design the irrigation area basic database and the auxiliary database.

youdao

系统构建的核心是灌区管理数据库，数据库包括空间数据库、属性数据库、超文本数据库多媒体数据库等。

The core of system is the irrigation area management database, Based on the object-oriented method, design the irrigation area basic database and the auxiliary database.

youdao