View the system all the database files, see the table for more information, add and delete records.

查看系统所有数据库文件，查看表详细信息，新增和删除记录。

youdao

When the benchmark starts, it instantly creates 100 very active user sessions that select, add, update, and delete records at the same time.

当基准测试开始时，它立即创建 100 个非常活跃的用户会话来同时选择、添加、更新和删除记录。

youdao

However, indexes can either increase or decrease the performance of operations to add, change, and delete database records.

然而，索引要么增加要么减少了添加，变更，以及删除数据库记录的操作执行。

youdao