分配一个环境句柄通常是ODBC应用程序中的第一步。
Allocating an environment handle is usually the first step in an ODBC application.
为了在应用程序中分配其他类型的句柄，必须提供一个环境句柄。
One environment handle must be present to allocate other types of handles in an application.
这些函数以环境句柄、连接句柄、语句句柄或描述符句柄作为输入参数，返回与上一次使用该句柄作出的函数调用相关的诊断信息。
These functions take environment, connection, statement, or descriptor handles as input and return the diagnostic information related to the last function call made using that handle.
Future对象不可序列化，这意味着，在高度可用的环境中，回调处理程序返回的句柄不能被复制。
The Future object is not serializable, which means that in a highly available environment the handle returned by the callback handler cannot be replicated.
你可以依据程序的环境，包装不同的事件句柄。
You can wire up different event handlers, depending on the circumstances of the program.
工作流引擎负责工作流执行服务中的部分或全部运行控制环境，并为工作流句柄提供运行环境。
Workflow engine is responsible for part or all of the running and control environment in the execution service, and offers the running environment for handle of the workflow.
工作流引擎负责工作流执行服务中的部分或全部运行控制环境，并为工作流句柄提供运行环境。
Workflow engine is responsible for part or all of the running and control environment in the execution service, and offers the running environment for handle of the workflow.
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