IBM DB2 is a great choice for use as a persistence store.

IBM DB 2就是一个用做持久性存储的好选择。

youdao

Within the persistence context, the entity's association with the underlying persistence store is managed by the entity manager (EM).

在持久性上下文中，实体与基础持久性存储区的关联由实体管理器(entity manager, EM)管理。

youdao

Because each chunk is loaded on demand, executed, then shut down, this state must be stored externally, such as in a database or another persistence store.

因为每个块都是按需加载、执行、关闭，状态必须存储在外部，比如在数据库里，或是其它持久化存储。

youdao