One of the limitation for traditional data-dictionary design pattern in information systems is short of expansibility,and it is unadapted for the appearance of new information resources.

• 针对传统信息模型中,数据字典的构建模式无法接纳新资源信息的加入,扩展性较差的不足,提出了一种可扩展的数据字典体系的结构设计方法。