摘要
阐述了抽象属性、广义抽象属性、时间标注、时域和抽象属性的拓展等与扩展时间轮转模型相关的基本概念,描述了扩展时间轮转模型的原理、分类和相关因素,介绍了面向客观主题及面向时间特征的扩展时间轮转模型的构造策略·结合具体实例,从存储效率、数据抽取效率、构造便利性和实用性等多方面分析了时间轮转模型和传统数据仓库模型的优缺点·实践表明,按时间轮转模型构造的数据仓库,对联机分析处理和数据挖掘等技术都有较好的支持·
A new time-extended rotation model is developed used to construct data warehouse, with some related concepts elucidated covering abstract attribute, generalized abstract attribute, time-labeling, time domain and widened abstract attribute. The principle, classification and correlated factors of time-extended rotation model are described, with the subject-oriented and time-oriented methods also introduced as the construction strategies. With some application examples, the advantages and disadvantages of traditional DW model and time rotation model are discussed in view of the storage efficiency, data extraction efficiency, convenience in construction and practicability. The data warehouse constructed using the time rotation model will support the OLAP and DM well.
出处
《东北大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2004年第8期746-749,共4页
Journal of Northeastern University(Natural Science)
基金
国家高技术研究发展计划项目(2001AA415210)
关键词
数据仓库
时间轮转
抽象属性
时间标注
联机分析处理
数据挖掘
data warehouse
time rotation
abstract attribute
time-labeling
on-line analytical processing
data mining
