XML is based on semistructured data model, but the semistructured data is hard to store and manage.

XML基于半结构化数据模型，而半结构化数据很难统一存储和管理。

youdao

XML is based on semistructured data model, but the semistructured data is hard to store and manage.

XML基于半结构化数据模型，而半结构化数据很难统一存储和管理。

youdao