select * from syscat.tables where tabname='SYSTABLES' select * from SYSCAT.TABDEP where tabschema='SYSIBM' and tabname='TABLES' select * from sysibm.tables where table_name='SYSTABLES' syscat.tables && sysibm.tables 视图-->sysibm.systables 物理表 syscat.columns && sysibm.columns 视图 -->sysibm.syscolumns 物理表