给出了OWL本体和关系数据库模式的形式定义；
The formal definitions of OWL ontology and relational database(RDB) schema were given.
Repository 组件将存储模型映射到关系数据库模式和表。
The Repository component maps storage models to relational database schemas and tables.
我们考察这一问题的逆问题：识别关系数据库模式中ifo结构。
In this paper, the reverse problem, identifying IFO object structures in relational schemas in discussed.
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