There is great difference between the data structure of XML and the data storage structure of database, and XML technology is not only unripe, but also discommodiousness.
但由于XML表示数据的结构和数据库存储数据的结构存在很大的差异，这种技术不成熟，而且使用也不方便。
There is great difference between the data structure of XML and the data storage structure of database, and XML technology is not only unripe, but also discommodiousness.
但由于XML表示数据的结构和数据库存储数据的结构存在很大的差异，这种技术不成熟，而且使用也不方便。
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