许多企业为运行应用程序，比如数据库、应用服务器、变更管理系统和缺陷跟踪工具，准备了一个硬件清单。
Many businesses have an inventory of hardware for running applications such as databases, application servers, change-management systems, and defect-tracking tools.
数据保存服务：这些服务执行传统地归属于数据库管理系统的数据活动，例如创建、读取、更新和删除。
Data persistence services: These services perform data activities that are traditionally relegated to the database management system, such as create, read, update and delete.
许多因素都可以影响数据库服务器的性能，例如硬件系统的设计、数据库对象的设计、数据存储器的管理、应用程序的设计等等。
Many factors can affect the performance of a database server, such as hardware system design, database object design, data storage management, application design, and so forth.
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