微观经济学MIS_CH05.pptVIP

Entity-relationship Join: Combines relational tables to present the user with more information than is available from individual tables Project: Creates a subset consisting of columns in a table Permits user to create new tables containing only desired information 数据集市也可叫做“小数据仓库”。如果说数据仓库是建立在企业级的数据模型之上的话。那么数据集市就是企业级数据仓库的一个子集，他主要面向部门级业务，并且只面向某个特定的主题。数据集市可以在一定程度上缓解访问数据仓库的瓶颈。 联机分析处理（OLAP）指的是对存储在数据库或数据仓库中的数据提供分析的一种软件。OLAP 工具能快速提供复杂数据库查询的答案，并帮助用户分析多维数据中的各维情况。 * * * * One popular use of data mining: Analyzing patterns in customer data for one-to-one marketing campaigns or for identifying profitable customers Predictive analysis: Uses data mining techniques, historical data, and assumptions about future conditions to predict outcomes of events, such as the probability a customer will respond to an offer or purchase a specific product Data Mining Using Databases to Improve Business Performance and Decision Making Essentials of Business Information Systems Chapter 5 Foundations of Business Intelligence: Databases and Information Management Firms use the Web to make information from their internal databases available to customers and partners Middleware and other software make this possible Web server Application servers or CGI Database server Web interfaces provide familiarity to users and savings over redesigning and rebuilding legacy systems Databases and the Web Using Databases to Improve Business Performance and Decision Making Essentials of Business Information Systems Chapter 5 Foundations of Business Intelligence: Databases and Information Management Using Databases to Improve Business Performance and Decision Making Essentials of Business Information Systems Chapter 5 Foundations of Business Intelligence: Databases and Information Management Figure 5-15 Users access an organization’s internal database through the Web using their desktop PCs and Web browser software. Linking Internal Databases to the Web Establishing an Information Policy Managing Data Resour