XML has become a standard for the representation and exchange of I nt ernet data. This creates new requirements for data management. XML Database syst ems are well-known for data management.

• XML已成为Internet数据的表示和交换的标准；这就产生了管理XML数据的新需求；而管理数据是数据库所擅长的；因此将XML和数据库系统结合是一个明智的选择.