A highly duplicated index can severely impact the speed of accessing, updating and deleting data.
一个高度重复的索引可能会严重影响访问、更新和删除数据的速度。
Each operation performed by a DAO — such as creating, updating, or deleting data — is associated with a transaction.
由DAO所执行的每一个操作——如创建、更新或者删除数据——都与一个事务相关联。
It includes examples of searching for data using various attributes, and adding, updating, and deleting data in the system.
文中包括多个例子，涉及到使用各种属性搜索数据，以及在系统中添加、更新和删除数据。
The querying functions are capable of coping with the standard database transactions for creating, reading, updating, and deleting data (known as CRUD operations).
查询函数能够处理标准化数据库事务，以便创建、读取、更新和删除数据(通称CRUD操作)。
The following topics provide details on adding, editing, and deleting data, and how to work with data in various stages of an application.
下列主题详细说明如何加入、编辑和删除资料，以及在应用程序各个阶段中如何使用资料。
The following topics provide details on adding, editing, and deleting data, and how to work with data in various stages of an application.
下列主题详细说明如何加入、编辑和删除资料，以及在应用程序各个阶段中如何使用资料。
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