An IMS/VS facility that separates all activity of an application program from any other active application program until that application program indicates, by reaching a synchronization point, that the data it has modified is consistent and complete.; 虛擬存儲信息管理系統(tǒng)(IMS/VS)的一種設施,它把一個應用程序的所有活動同其它運行的應用 程序分隔開,直到該應用程序到達一個同步點,表明已修改的數(shù)據(jù)是一致的并且是完整的為止。