How much time will pass between backup operations?
在备份操作之间应该间隔多长时间?
We know that our service operations are going to need to pass data around in order to do their jobs.
我们了解,服务操作需要来回传递数据以便完成工作。
The other two operations might not require any input (although you might pass in data that specifies some restrictions, for example) and return a collection of employee data.
其他两种操作可能无需任何输入(当然您可传递一些诸如限制条件之类的数据)而返回员工资料集合。
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