这样的结果集可以看作是“视图”，它们不是显式地在数据库中创建的，而是由存储过程动态地创建的。
Such result sets can be regarded as "views" that are not explicitly created in the database but are created on the fly by the stored procedure.
模型表示数据，并提供管理、操作、计算数据所需的函数，它们通常存储(虽然不是总是)在数据库中。
Models represent data and provide functions necessary to manage, manipulate, and perform calculations on this data, which is usually (though not always) stored in a database.
因此，整个数据列和相关的索引不是存储在数据库中。
Thus, whole columns of data and the associated indices are not stored in the database.
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