A persistent closure of a managed root entity x is defined as the set of managed entities C(x) ={e}, where e is reachable from x directly or indirectly via a persistent relationship.
管理根实体x的一个持久化闭包被定义为一个管理实体集C(x) ={e}，其中 e 可以直接或间接通过一个持久化关系从 x访问。
A persistent closure of a managed root entity x is defined as the set of managed entities C(x) ={e}, where e is reachable from x directly or indirectly via a persistent relationship.
管理根实体x的一个持久化闭包被定义为一个管理实体集C(x) ={e}，其中 e 可以直接或间接通过一个持久化关系从 x访问。
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