用扩展RDBMS实现多媒体文件存储和查询

Storage and Retrieval of Multimedia Data by Extended RDBMS

阐述了用常用的关系型数据库管理系统来存储图像文件的技术原理,分析并比较了链表和B树两种数据结构在作为图像数据存储的数据结构时,对查询响应时间大小的影响,得出B树的查找快于链表的结论.结合具体科研任务,论述了在城市风貌影像数据库的开发中数据表的设计与图像数据解释方面的实现技术,证实了扩展关系型数据库管理系统在管理图像数据方面是有效的.

In order to solve the difficult problem of storage and retrieval resulted from complex image with large data, the extended relational database is used to storage and manage the image. Here the technical principle of storing and retrieving multimedia data using extended RDBMS is illustrated. The retrieval time between two data structures, B tree and list as the structure to store multimedia data, is analyzed and compared. The result is that B tree is better than list in retrieval time. Then, the implement technique in the database table design and image data explanation of a city landscape retrieval system is illustrated, and the authors also verified that using extended relational database management system to store and manage image data is effective and practicable.