【摘要】 本文提出了一种从面向对象数据库模式到关系数据库模式的映射及基于该映射的模式转换算法。以查询为例,说明了面向对象数据库中的特有语义仍能保留在转换后的关系模式中,而且从面向对象数据库到关系数据库的基于该模式转换中操纵运算的转换也是切实可行的。所得的模式转换结果可应用于面向对象数据库和关系数据库之间的互操作。更多还原

【Abstract】 In this paper, we propose a mapping from the object-oriented database (OODB) schema to the relational database (RDB) schema, and give a related algorithm based on the mapping. Then, we take the query as an example to demonstrate that the characteristic semantics of OODB can be preserved in the translated relational schema and that the manipulation operation translation from OODB to RDB are also available based on the schema translation. The result of the translation can be applied to the interoperation between OODB and RDB.更多还原