Computer and Modernization ›› 2013, Vol. 218 ›› Issue (10): 91-93.doi: 10.3969/j.issn.1006-2475.2013.10.023
• 数据库 • Previous Articles Next Articles
QI Li-na
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Abstract: Data granularity decides the amount of data in data warehouse and the ability to answer queries. Multiple-granularity can not only satisfy the requirements of the amount of data to a certain extent, but also meet the requirements of the ability to answer queries. So in the design of data warehouse, multiple-granularity becomes the preferred. When the data warehouse using multiple-granularity, we will face with how to manage data-granularity problem. This paper firstly studies granularity level and multiple-granularity, puts forward granularity table in order to manage data granularity, expounds the definition process of granularity table, analyzes the advantages of granularity table; and puts forward the process of data warehouse multi-dimensional model based on granularity table.
Key words: data warehouse multi-dimensional model, data granularity, granularity level, multiple-granularity, granularity table
CLC Number:
TP311.131
QI Li-na. Application of Data Granularity in Warehouse for E-commerce Website[J]. Computer and Modernization, 2013, 218(10): 91-93.
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URL: http://www.c-a-m.org.cn/EN/10.3969/j.issn.1006-2475.2013.10.023
http://www.c-a-m.org.cn/EN/Y2013/V218/I10/91