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1.A GEOMETRY DATABASE MODELLING WITH THE SCHEMA DDL OF MEDAMS
一种几何数据库的建模方法收藏指正
2.According to a set of predefined conversion rules from ontology to RDB schema, an conversion algorithm and the XML representation format for element mappings between ontology and RDB schema (Onto-RDB), O2DDesigner automatically generates RDB schema (SQL DDL statements) and Onto-RDB element mappings data in XML format based on the inputted domain ontology.
O2DDesigner根据输入的领域本体,按照预定义的本体到关系数据库模式的转换规则和转换算法以及本体与关系数据库模式之间的(Onto-RDB)元素映射关系XML表示格式,生成相应的关系数据库模式(SQL DDL语句)以及Onto-RDB元素映射关系(XML格式)。收藏指正
3.It is designed to be used for reservoir description, supported by VAX/VMS operating system, using network data medel. The base schema is de-fined by data tacribing language (DDL).
它是在VAX/VMS操作系统支持下采用网状数据模型,使用数据描述语言(DDL)定义的数据库模式。收藏指正
4.For the schema management, we present three functions and implementations of DDL which is a data description language; For the object management, its architecture is presented.
在模式管理中,介绍了模式描述语言DDL的三大功能及实现,在对象操纵管理中,给出了对象管理的体系结构.收藏指正
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