.       &    :
SET CONSTRAINTS ALL IMMEDIATE;
SET CONSTRAINTS ALL IMMEDIATE;
        ,      ,    ,     . SET CONSTRAINTS    ,   ,        ,      - ,      (   )    .
:
          .           .   ,         ,   ,             (commit time error).    Oracle    .
 ENFORCE
  ,      ,      "Oracle:   ".     ,  ,      "  ",       .    ,          ,         ,    ""  .     ,    ,   .  ,   !
  ,       ,    "    "      .     "" ,       .   ,   Oracle?  :      ,     ,    .  ,       .
3.    OraclcS	41