【摘要】 针对油田数据模型客户化定制的需求以及现有数据库逻辑模型特点,分析了概念模型相关定义,提出了建立面向用户的概念模型的思想和相关技术,包括概念模型的一般建立方法、数据体系以及消除重复数据项的方法,并给出了从概念模型到逻辑模型的投影规则.更多还原

【Abstract】 Aiming at the requirements for customizing the data model in the oil field and the features of existing database logical model, the related definitions about conceptual data model are analyzed, and the ideal and related technologies to model user-oriented conceptual data model are presented, which includes the general methods to build the conceptual data model, and the data architecture of conceptual model, and the approaches to get rid of the duplicated data items, and the rules to project concept model into logical model are built.更多还原