If a connection cannot be made to the database management system, you receive a message indicating that the connection failed and the reason it failed when the PHP script is executed.

如果无法连接到数据库管理系统，那么在执行php脚本时，您将会收到一个消息，指出连接失败及失败的原因。

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The workload is an application that simulates message flow among an automobile dealership, manufacturing, supply chain management, and an inventory system.

Workload是一个应用程序，它模拟汽车经销商、制造商、供应链管理以及库存系统之间的消息流。

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System management software can also trigger actions (such as sending an e-mail message or a pager message) based on the type of events it receives.

系统管理软件也可以根据所接收到的事件的类型触发一些操作（例如发送 e-mail 消息或传呼消息）。

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