In this method, the descendant node under the root node of the reflecting dataset in relative-database was used to organize the contents of the descendant tree under the root node, to form data objects and establish meta database and object database. 它采用关系数据库反映数据集根节点的子节点,组织根节点的各子树内容,形成数据对象,建立元数据库和对象数据库。