我如何在JDO中映射父子關系,每個父級都有一個孩子列表? [英]How can I map a parent-child relationship in JDO, where each parent has a list of children?
實體關系圖(ERD)-是否將“ CAN”關系視為完全參與? [英]Entity Relationship Diagram (ERD) - Is “CAN” relationship considered total participation?