data management block(DMB)

In IMS/VS, a control block in main storage that describes and controls a physical data base. It is constructed from information obtained from the ACB library or the DBD library.; 在IBM的虛存信息管理系統(IMS/VS)中,主存儲器中的一種控制塊,描述并控制物理數據 庫。它由從存取控制塊(ACB)庫或數據庫描述(DBD)庫獲得的信息構成。