现有的数据库索引技术，普遍不能适应多维空间属性的搜索，特别是无法对大容量的多媒体数据进行基于内容的检索。
The existing indexing technology of databases doesn t adapt to the retrieval of multi-dimensional space, especially the content-based retrieval on large multimedia database.
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.
以多媒体数字艺术作品运动的属性为切入点，进行了运动元素的幅度、速度、密度、视角分析；
On the research basis of locomotion attribute, the paper analyzed the scope, speed, density, angle of locomotion element.
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