释义 |
DoodCOCA³¹⁵¹¹¹⁺⁴BNC²³⁶²¹³⁺¹ 基本例句 杜德¹⁰⁰ Deductive database and Object database DOOD are two extensions of relation databaseRDB technology. 演绎数据库与面向对象数据库是对关系数据库技术的两大扩展。 dictall This paper introduces the definition and denotation of classes in DOOD, then discusses the derived classes created by rules based on them. 文中给出了在 DOOD中类的定义和表示,并以此为基础介绍了利用规则生成派生类。 cnki |