本文主要关注建立数据库连接以及处理潜在的数据库错误和警告。

This article focuses on establishing the database connection and dealing with potential database errors and warnings.

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在建立数据库连接之后，为insert语句创建一个简单的字符串。

After establishing a database connection, create a simple string for your INSERT statement.

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IP地址(或域名)：表示建立数据库连接时所在的IP地址。

IP address (or domain name) : This represents the IP address from which the database connection is established.

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