本文给出了一种多数据库系统中的模式映射方法，并使用模式映射树来存储和表达这种模式映射。
This paper gives an approach of schema mapping in multidatabase systems and USES a schema mapping tree to store and express these mappings.
我们需要定义一个操作来遍历映射树、在树中搜索一个模式，并在该点应用一项操作。
We want to define an operation that walks over our tree of maps, searches for a pattern in the tree, and applies a manipulation at that point.
在分析了构件刻面分类模式和树映射相关理论的基础上，提出了一个新颖的叶节点包容匹配模型，并给出了相应的检索算法。
Based on faceted classification schema and theory of tree mapping, a novel matching model named leaf node containment matching model and correspondence retrieving algorithm are put forward.
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