基于XML的可扩展图片数据库的实现方法

从实现图片数据库可扩展性的角度，分析了传统关系型数据库解决这一问题的不足之处，提出了一个基于纯XML数据库的解决方案。该方案使用XML格式来描述和存储图片的元数据，利用XML的可扩展性、结构化存储和XML数据库Tamino可以随时修改文档模式，不会破坏数据库中原有的数据，有效地实现了图片数据库的可扩展性，同时使图片数据库具有高效检索和跨平台的特点。
关 键 词 图片数据库; 元数据; 可扩展标记语言; 纯XML数据库

Abstract There is no uniform standard to describe the metadata of photograph presently, and it is usually diffcult to get all the characters of photograph when building a Photograph Data Base(PDB). Therefore, higher extensibility is required for PDB system. In respect of the extensibility of PDB, this paper analyzes the shortcomings of traditional RDBMS and introduces a new solution based on Native XML-Database which uses XML format to describe and store the metadata of photographs. Making use of the extensibility and structural storage of XML, this solution effectively implements the extensibility of the PDB and enables high retrieval capability and cross-platform character of it.
Key words photograph-database; metadata; extensible markup language; native-XML database