A Concurrency Hierarchical View Maintenance Method in Data Warehouse of Website Environment

• Main Authors: Shih-Min Chiang, 江世民
• Other Authors: Chih-Cheng Lien
• Format: Others
• Language: zh-TW
• Published: 2003
• Online Access: http://ndltd.ncl.edu.tw/handle/55633173214086809694

碩士 === 東吳大學 === 資訊科學系 === 91 === E-commerce, supported by the Internet and World Wide Web widely is used to accomplish trades. Nowadays, there are many on-line application systems be established to provide people with querying useful data and information, for examples, on-line stock trading, hospital information system and on-line retailing etc.. Because of the large magnitude of the data, it is important to improve the efficiency of management and querying about the data for these application systems. An important method for improving the efficiency of data querying in these systems is to create the views in their database systems. A view is a virtual table that is derived from one or more other tables, stores the data of often using. Hence, it can decrease dramatically the process time of a query. In this thesis we describe how to create and manage the views of stock market database in the network environment under the quick response, the concurrent updating and other conditions. Thus, a more convenient and more efficient environment for querying the database in the Internet can be provided.