從實(shí)現(xiàn)圖片數(shù)據(jù)庫(kù)可擴(kuò)展性的角度，分析了傳統(tǒng)關(guān)系型數(shù)據(jù)庫(kù)解決這一問(wèn)題的不足之處，提出了一個(gè)基于純XML數(shù)據(jù)庫(kù)的解決方案。該方案使用XML格式來(lái)描述和存儲(chǔ)圖片的元數(shù)據(jù)，利用XML的可擴(kuò)展性、結(jié)構(gòu)化存儲(chǔ)和XML數(shù)據(jù)庫(kù)Tamino可以隨時(shí)修改文檔模式，不會(huì)破壞數(shù)據(jù)庫(kù)中原有的數(shù)據(jù)，有效地實(shí)現(xiàn)了圖片數(shù)據(jù)庫(kù)的可擴(kuò)展性，同時(shí)使圖片數(shù)據(jù)庫(kù)具有高效檢索和跨平臺(tái)的特點(diǎn)。
關(guān) 鍵 詞 圖片數(shù)據(jù)庫(kù); 元數(shù)據(jù); 可擴(kuò)展標(biāo)記語(yǔ)言; 純XML數(shù)據(jù)庫(kù)

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