You should now have a good idea of what an ORM is, how to manage validation and table relationships, and how to swap out HSQLDB for the database of your choice.
通过本文，您应该很好地理解了什么是ORM、如何管理验证和表关系以及如何用自己选择的数据库替换hsqldb。
The not-so-talented fellow from a good family may swap his pedigree for a poor but brilliantly talented mate.
出身名门的庸才可能以他的家族血统换取贫苦却才能出众的另一半。
Having the VM subsystem automatically move parts of the TMPFS filesystem to swap can actually be good for performance, since by doing so, the VM subsystem can free up RAM for processes that need it.
让vm子系统自动地移动部分tmpfs文件系统到交换分区实际上对性能上是好的，因为这样做可以让V m子系统为需要RAM的进程释放空间。
Having the VM subsystem automatically move parts of the TMPFS filesystem to swap can actually be good for performance, since by doing so, the VM subsystem can free up RAM for processes that need it.
让vm子系统自动地移动部分tmpfs文件系统到交换分区实际上对性能上是好的，因为这样做可以让V m子系统为需要RAM的进程释放空间。
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