This sample demonstrates techniques for implementing database index space monitoring applications 此示例说明了实现数据库索引空间监视应用程序的方法。
A z os installation requires that the tables be in different schemas , because of database index requirements 因为数据库索引的需要, z / os安装要求这些表在不同的模式中。
By using query optimization , database index , middle base and automatic data update technique , the dw project is very successful . the academic design , the method of implement and the future of insurance industry data warehousing are introduced 通过运用查询优化技术、数据仓库索引技术、带中间库的三层结构和数据仓库数据自动更新方案成功地建立了大连人寿保险业务数据仓库系统。
A database index is a data structure that improves the speed of data retrieval operations on a database table at the cost of slower writes and less storage space. Indices can be created using one or more columns of a database table, providing the basis for both rapid random lookups and efficient access of ordered records.