In addition to write procedures that manipulate the data after the database server has done its processing, we can include the processing within the set processing of the database system.
除了通过编写过程，在数据库服务器完成其处理之后操作数据，我们还可以将该处理包含在数据库系统的集合处理中。
So in the controller, we are going to be accessing the Model and getting it all set up so all the view has to do is spit out some data.
因此，在控制器中，我们会访问模型，并获得所有创建完毕的模型，这样，所有视图所要做的就是输出某些数据。
Clustering has its advantages when the data set is defined and a general pattern needs to be determined from the data.
当数据集已定义并且需要从此数据确定一个通用的模式时，群集的优势就会比较明显。
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