20.3.1.Connection Object

The Connection object has the following capabilities:
 
Creates SQL statements
Executes SQL queries, inserts, updates, and deletes
Handles commits and rollbacks
Provides metadata regarding the database connection
 
By default, a Connection object is in autocommit mode, which means it automatically commits changes after executing each statement.

Connection对象具有以下功能：
 
创建SQL语句
执行SQL查询，插入，更新和删除
提交和回滚
提供关于数据库连接的元数据
 
默认情况下，Connection对象是在自动提交模式，这意味着它会自动提交执行每个语句后的变化。