粗糙集理论由于其独特的知识表示方法在数据预处理方面有着得天独厚的优势，同时也成为数据库中知识发现的有效手段。
Rough Sets theory has great superiority in Data Preprocessing because of its particular expression of knowledge, as well as it makes an effective means of knowledge Discovery in Database.
该系统采用框架知识表示法，将知识库与电网拓扑结构数据库均做成了外部数据库的形式进行存储。
The frame knowledge representation approach is applied to the system in which the knowledge base and topology structural database of power network are saved as external databases.
库卡表示，其工业知识产权，以及其客户和供应商数据可以通过协议得到保护，美的无法访问或移动数据库。
Kuka said that its industrial property rights and the data of its customers and suppliers would be protected by the agreement and that Midea would not be able to gain access to or move databases.
在这里我们描述了面向实体的知识表示模型、数据库到知识库的转换、知识库的实例化、规则编辑器以及数据校验算法。
Here we describe knowledge representation model oriented entity, database conversion, instantiation of the knowledge base, rule editor and data check-up algorithm.
这里我们使用面向对象的知识表示来讨论建立知识库，利用关系数据库存储和管理资料。
Here, we set up the repository by the Object-oriented knowledge representation, using rational database to storing and managing data.
本文首先研究了变电设备的状态评价和状态诊断的知识表示方法，设计了相应的数据库和推理流程。
Firstly, the knowledge representation of state evaluation and state diagnosis are researched, and the related database system and reasoning program process are designed.
根据知识表示和知识的组织方式，建立了基于数据库技术的知识库。
According to the representation and organization of the knowledge, the knowledge base is built on database technique.
该系统采用产生式知识表示法和框架知识表示法，通过在数据库中分别建立规则库、状态库、网络拓扑知识库和设备属性库来完整表述变电站的全部信息。
Knowledge production and frame representation are used to build rule database, status database, topology database and property database, these databases can describe all information of a substation.
建立了基于数据库技术的控制指导专家系统知识库，研究了知识库知识获取方式、表示方式和组织方式。
Database of control guidance expert system is established based on database technology. Methods of knowledge acquisition, representation and organization are studied.
本文采用了基于规则的知识表示方法，并采用了关系型数据库建立本系统的知识库，知识库具有添加、删除等功能，实现规则的增加及重复规则的删除。
The structure of knowledge base is build by the database of relational data model. In order to add rules and delete reduplicate rules, knowledge base has the function of addition, deletion and so on.
本文采用了基于规则的知识表示方法，并采用了关系型数据库建立本系统的知识库，知识库具有添加、删除等功能，实现规则的增加及重复规则的删除。
The structure of knowledge base is build by the database of relational data model. In order to add rules and delete reduplicate rules, knowledge base has the function of addition, deletion and so on.
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