Data pump export/import(hereinafter referred to as Export/Import for ease of reading)是一种将元数据和数据导出到系统文件集/从系统文件集导入数据的服务端工具;导出的文件可以移动到其它服务器上,但只能使用impdp导入;使用前要先建立目录(directory)和授权: conn / as sysdba CREATE DIRECTORY PUMP_DIR AS '/u01/backup'; 创建后即可查询出目录信息,…
Course textbooks Text 1: M. T. Oszu and P. Valduriez, Principles of Distributed Database Systems, 2nd ed., Prentice-Hall, 1999.Errata Text 2: J. Han and M. Kamber, Data Mining: Concepts and Techniques, Morgan Kaufmann, 2000.Errata Lecture Schedule Th…
What is the most common software of data mining? 1 Orange? 2 Weka? 3 Apache mahout? 4 Rapidminer? 5 R? and which one? If you have any explanation about the topic, I appreciate it.…
Data mining is the process of finding patterns in a given data set. These patterns can often provide meaningful and insightful data to whoever is interested in that data. Data mining is used today in a wide variety of contexts – in fraud detection, a…
Abstract The content of the web has increasingly become a focus for academic research. Computer programs are needed in order to conduct any large-scale processing of web pages, requiring the use of a web crawler at some stage in order to fetch the pa…