syscat.references contains a row for each referential constraint db2 select constname, tabname, refkeyname, reftabname, colcount, deleterule, updaterule from syscat.references
references 为每个参照约束保持一个行db2selectconstname,tabname,refkeyname,reftabname,colcount,deleterule,updaterulefromsyscat.references