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12 
  SELECT (lcChildWkArea)
  SCAN FOR 课程代号=lcOldParentID
    pnChildRec=recno()
    pcChildID=课程代号
    pcChildExpr="课程代号"
    IF NOT llRetVal
      EXIT
    ENDIF && not llretval
    llRetVal=riupdate("课程代号",lcParentID,"课程表")
  ENDSCAN get all of the 学生成绩表 records
  =rireuse("学生成绩表",lcChildWkArea)
  IF NOT llRetVal
    IF _triggerlevel=1
      DO riend WITH llRetVal
    ENDIF at the end of the highest trigger level
    SELECT (lcStartArea)
    RETURN llRetVal
  ENDIF
ENDIF this parent id changed
IF _triggerlevel=1
  do riend with llRetVal
ENDIF at the end of the highest trigger level
SELECT (lcStartArea)
RETURN llRetVal
** "结束参照完整性更新触发器" 课程表
********************************************************************************

********************************************************************************
** "参照完整性插入触发器" 课程表
PROCEDURE __RI_INSERT_课程表
LOCAL llRetVal
llRetVal = .t.
PRIVATE pcParentDBF,pnParentRec,pcChildDBF,pnChildRec,pcParentID,pcChildID
PRIVATE pcParentExpr,pcChildExpr
STORE "" TO pcParentDBF,pcChildDBF,pcParentID,pcChildID,pcParentExpr,pcChildExpr
STORE 0 TO pnParentRec,pnChildRec
IF _triggerlevel=1
  BEGIN TRANSACTION
  PRIVATE pcRIcursors,pcRIwkareas,pcRIolderror,pnerror,;
  pcOldDele,pcOldExact,pcOldTalk,pcOldCompat,PcOldDBC
  pcOldTalk=SET("TALK")
  SET TALK OFF
  pcOldDele=SET("DELETED")
  pcOldExact=SET("EXACT")
  pcOldCompat=SET("COMPATIBLE")
  SET COMPATIBLE OFF
  SET DELETED ON
  SET EXACT OFF
  pcRIcursors=""
  pcRIwkareas=""
  pcRIolderror=ON("error")
  pnerror=0
  ON ERROR pnerror=rierror(ERROR(),message(),message(1),program())
  IF TYPE('gaErrors(1)')<>"U"
    release gaErrors
  ENDIF
  PUBLIC gaErrors(1,12)
  pcOldDBC=DBC()
  SET DATA TO ("学生管理")
ENDIF first trigger
LOCAL lcChildID && child's value to be sought in parent
LOCAL lcParentWkArea && parentwork area handle returned by riopen
LOCAL lcChildWkArea && child's work area
LOCAL lcStartArea
lcStartArea=select()
llRetVal=.t.
lcChildWkArea=SELECT()
SELECT (lcChildWkArea)
lcChildID=教师编号
pcChildDBF=dbf(lcChildWkArea)
pnChildRec=recno(lcChildWkArea)
pcChildID=lcChildID
pcChildExpr="教师编号"
lcParentWkArea=riopen("教师表","教师编号")
IF lcParentWkArea<=0
  IF _triggerlevel=1
    DO riend WITH .F.
  ENDIF at the end of the highest trigger level
  SELECT (lcStartArea)
  RETURN .F.
ENDIF not able to open the child work area
pcParentDBF=dbf(lcParentWkArea)
llRetVal=SEEK(lcChildID,lcParentWkArea)
pnParentRec=recno(lcParentWkArea)
=rireuse("教师表",lcParentWkArea)
IF NOT llRetVal
  DO rierror with -1,"违反插入限制规则。","",""
  IF _triggerlevel=1
    DO riend WITH llRetVal
  ENDIF at the end of the highest trigger level
  SELECT (lcStartArea)
  RETURN llRetVal
ENDIF
IF _triggerlevel=1
  do riend with llRetVal
ENDIF at the end of the highest trigger level
SELECT (lcStartArea)
RETURN llRetVal
** "结束参照完整性插入触发器" 课程表
********************************************************************************

********************************************************************************
procedure __RI_UPDATE_学生成绩表
** "参照完整性更新触发器" 学生成绩表
LOCAL llRetVal
llRetVal = .t.
PRIVATE pcParentDBF,pnParentRec,pcChildDBF,pnChildRec,pcParentID,pcChildID
PRIVATE pcParentExpr,pcChildExpr
STORE "" TO pcParentDBF,pcChildDBF,pcParentID,pcChildID,pcParentExpr,pcChildExpr
STORE 0 TO pnParentRec,pnChildRec
IF _triggerlevel=1
  BEGIN TRANSACTION
  PRIVATE pcRIcursors,pcRIwkareas,pcRIolderror,pnerror,;
  pcOldDele,pcOldExact,pcOldTalk,pcOldCompat,PcOldDBC
  pcOldTalk=SET("TALK")
  SET TALK OFF
  pcOldDele=SET("DELETED")
  pcOldExact=SET("EXACT")
  pcOldCompat=SET("COMPATIBLE")
  SET COMPATIBLE OFF
  SET DELETED ON
  SET EXACT OFF
  pcRIcursors=""
  pcRIwkareas=""
  pcRIolderror=ON("error")
  pnerror=0
  ON ERROR pnerror=rierror(ERROR(),message(),message(1),program())
  IF TYPE('gaErrors(1)')<>"U"
    release gaErrors
  ENDIF
  PUBLIC gaErrors(1,12)
  pcOldDBC=DBC()
  SET DATA TO ("学生管理")
ENDIF first trigger
LOCAL lcParentID && parent's value to be sought in child
LOCAL lcOldParentID && previous parent id value
LOCAL lcChildWkArea && child work area handle returned by riopen
LOCAL lcChildID && child's value to be sought in parent
LOCAL lcOldChildID && old child id value
LOCAL lcParentWkArea && parentwork area handle returned by riopen
LOCAL lcStartArea
lcStartArea=select()
llRetVal=.t.
lcChildWkArea=select()
IF _triggerlevel=1 or type("pccascadeparent")#"C" or (NOT pccascadeparent=="学生信息")
  SELECT (lcChildWkArea)
  lcChildID=学号
  lcOldChildID=oldval("学号")
  pcChildDBF=dbf(lcChildWkArea)
  pnChildRec=recno(lcChildWkArea)
  pcChildID=lcOldChildID
  pcChildExpr="学号"
  IF lcChildID<>lcOldChildID
    lcParentWkArea=riopen("学生信息","学号")
    IF lcParentWkArea<=0
      IF _triggerlevel=1
        DO riend WITH .F.
      ENDIF at the end of the highest trigger level
      SELECT (lcStartArea)
      RETURN .F.
    ENDIF not able to open the child work area
    pcParentDBF=dbf(lcParentWkArea)
    llRetVal=SEEK(lcChildID,lcParentWkArea)
    pnParentRec=recno(lcParentWkArea)
    =rireuse("学生信息",lcParentWkArea)
    IF NOT llRetVal
      DO rierror with -1,"违反插入限制规则。","",""
      IF _triggerlevel=1
        DO riend WITH llRetVal
      ENDIF at the end of the highest trigger level
      SELECT (lcStartArea)
      RETURN llRetVal
    ENDIF no parent
  ENDIF this value was changed
ENDIF not part of a cascade from "学生信息"
IF _triggerlevel=1 or type("pccascadeparent")#"C" or (NOT pccascadeparent=="课程表")
  SELECT (lcChildWkArea)
  lcChildID=课程代号
  lcOldChildID=oldval("课程代号")
  pcChildDBF=dbf(lcChildWkArea)
  pnChildRec=recno(lcChildWkArea)
  pcChildID=lcOldChildID
  pcChildExpr="课程代号"
  IF lcChildID<>lcOldChildID
    lcParentWkArea=riopen("课程表","课程代号")
    IF lcParentWkArea<=0
      IF _triggerlevel=1
        DO riend WITH .F.
      ENDIF at the end of the highest trigger level
      SELECT (lcStartArea)
      RETURN .F.
    ENDIF not able to open the child work area
    pcParentDBF=dbf(lcParentWkArea)
    llRetVal=SEEK(lcChildID,lcParentWkArea)
    pnParentRec=recno(lcParentWkArea)
    =rireuse("课程表",lcParentWkArea)
    IF NOT llRetVal
      DO rierror with -1,"违反插入限制规则。","",""
      IF _triggerlevel=1
        DO riend WITH llRetVal
      ENDIF at the end of the highest trigger level
      SELECT (lcStartArea)
      RETURN llRetVal
    ENDIF no parent
  ENDIF this value was changed
ENDIF not part of a cascade from "课程表"
lcParentWkArea=lcChildWkArea
IF _triggerlevel=1
  do riend with llRetVal
ENDIF at the end of the highest trigger level
SELECT (lcStartArea)
RETURN llRetVal
** "结束参照完整性更新触发器" 学生成绩表
********************************************************************************

********************************************************************************
** "参照完整性插入触发器" 学生成绩表
PROCEDURE __RI_INSERT_学生成绩表
LOCAL llRetVal
llRetVal = .t.
PRIVATE pcParentDBF,pnParentRec,pcChildDBF,pnChildRec,pcParentID,pcChildID
PRIVATE pcParentExpr,pcChildExpr
STORE "" TO pcParentDBF,pcChildDBF,pcParentID,pcChildID,pcParentExpr,pcChildExpr
STORE 0 TO pnParentRec,pnChildRec
IF _triggerlevel=1
  BEGIN TRANSACTION
  PRIVATE pcRIcursors,pcRIwkareas,pcRIolderror,pnerror,;
  pcOldDele,pcOldExact,pcOldTalk,pcOldCompat,PcOldDBC
  pcOldTalk=SET("TALK")
  SET TALK OFF
  pcOldDele=SET("DELETED")
  pcOldExact=SET("EXACT")
  pcOldCompat=SET("COMPATIBLE")
  SET COMPATIBLE OFF
  SET DELETED ON
  SET EXACT OFF
  pcRIcursors=""
  pcRIwkareas=""
  pcRIolderror=ON("error")
  pnerror=0
  ON ERROR pnerror=rierror(ERROR(),message(),message(1),program())
  IF TYPE('gaErrors(1)')<>"U"
    release gaErrors
  ENDIF
  PUBLIC gaErrors(1,12)
  pcOldDBC=DBC()
  SET DATA TO ("学生管理")
ENDIF first trigger
LOCAL lcChildID && child's value to be sought in parent
LOCAL lcParentWkArea && parentwork area handle returned by riopen
LOCAL lcChildWkArea && child's work area
LOCAL lcStartArea
lcStartArea=select()
llRetVal=.t.
lcChildWkArea=SELECT()
SELECT (lcChildWkArea)
lcChildID=学号
pcChildDBF=dbf(lcChildWkArea)
pnChildRec=recno(lcChildWkArea)
pcChildID=lcChildID
pcChildExpr="学号"
lcParentWkArea=riopen("学生信息","学号")
IF lcParentWkArea<=0
  IF _triggerlevel=1
    DO riend WITH .F.
  ENDIF at the end of the highest trigger level
  SELECT (lcStartArea)
  RETURN .F.
ENDIF not able to open the child work area
pcParentDBF=dbf(lcParentWkArea)
llRetVal=SEEK(lcChildID,lcParentWkArea)
pnParentRec=recno(lcParentWkArea)
=rireuse("学生信息",lcParentWkArea)
IF NOT llRetVal
  DO rierror with -1,"违反插入限制规则。","",""
  IF _triggerlevel=1
    DO riend WITH llRetVal
  ENDIF at the end of the highest trigger level
  SELECT (lcStartArea)
  RETURN llRetVal
ENDIF
SELECT (lcChildWkArea)
lcChildID=课程代号
pcChildDBF=dbf(lcChildWkArea)
pnChildRec=recno(lcChildWkArea)
pcChildID=lcChildID
pcChildExpr="课程代号"
lcParentWkArea=riopen("课程表","课程代号")
IF lcParentWkArea<=0
  IF _triggerlevel=1
    DO riend WITH .F.
  ENDIF at the end of the highest trigger level
  SELECT (lcStartArea)
  RETURN .F.
ENDIF not able to open the child work area
pcParentDBF=dbf(lcParentWkArea)
llRetVal=SEEK(lcChildID,lcParentWkArea)
pnParentRec=recno(lcParentWkArea)
=rireuse("课程表",lcParentWkArea)
IF NOT llRetVal
  DO rierror with -1,"违反插入限制规则。","",""
  IF _triggerlevel=1
    DO riend WITH llRetVal
  ENDIF at the end of the highest trigger level
  SELECT (lcStartArea)
  RETURN llRetVal
ENDIF
IF _triggerlevel=1
  do riend with llRetVal
ENDIF at the end of the highest trigger level
SELECT (lcStartArea)
RETURN llRetVal
** "结束参照完整性插入触发器" 学生成绩表
********************************************************************************

********************************************************************************
** "参照完整性删除触发器" 学生信息
PROCEDURE __RI_DELETE_学生信息
LOCAL llRetVal
llRetVal = .t.
PRIVATE pcParentDBF,pnParentRec,pcChildDBF,pnChildRec,pcParentID,pcChildID
PRIVATE pcParentExpr,pcChildExpr
STORE "" TO pcParentDBF,pcChildDBF,pcParentID,pcChildID,pcParentExpr,pcChildExpr
STORE 0 TO pnParentRec,pnChildRec
IF _triggerlevel=1
  BEGIN TRANSACTION
  PRIVATE pcRIcursors,pcRIwkareas,pcRIolderror,pnerror,;
  pcOldDele,pcOldExact,pcOldTalk,pcOldCompat,PcOldDBC
  pcOldTalk=SET("TALK")
  SET TALK OFF
  pcOldDele=SET("DELETED")
  pcOldExact=SET("EXACT")
  pcOldCompat=SET("COMPATIBLE")
  SET COMPATIBLE OFF
  SET DELETED ON
  SET EXACT OFF
  pcRIcursors=""
  pcRIwkareas=""
  pcRIolderror=ON("error")
  pnerror=0
  ON ERROR pnerror=rierror(ERROR(),message(),message(1),program())
  IF TYPE('gaErrors(1)')<>"U"
    release gaErrors
  ENDIF
  PUBLIC gaErrors(1,12)
  pcOldDBC=DBC()
  SET DATA TO ("学生管理")
ENDIF first trigger
LOCAL lcParentID && parent's value to be sought in child
LOCAL lcChildWkArea && child work area handle returned by riopen
LOCAL lcParentWkArea
LOCAL llDelHeaderarea
lcStartArea=select()
llRetVal=.t.
lcParentWkArea=select()
SELECT (lcParentWkArea)
pcParentDBF=dbf()
pnParentRec=recno()
STORE 学号 TO lcParentID,pcParentID
pcParentExpr="学号"
lcChildWkArea=riopen("学生成绩表","学号")
IF lcChildWkArea<=0
  IF _triggerlevel=1
    DO riend WITH .F.
  ENDIF at the end of the highest trigger level
  RETURN .F.
ENDIF not able to open the child work area
pcChildDBF=dbf(lcChildWkArea)
llRetVal=!SEEK(lcParentID,lcChildWkArea)
SELECT (lcChildWkArea)
pnChildRec=recno()
pcChildID=学号
pcChildExpr="学号"
IF !llRetVal
  DO rierror with -1,"违反删除限制规则。","",""
ENDIF
=rireuse("学生成绩表",lcChildWkArea)
IF NOT llRetVal
  IF _triggerlevel=1
    DO riend WITH llRetVal
  ENDIF at the end of the highest trigger level
  SELECT (lcStartArea)
  RETURN llRetVal
ENDIF
IF _triggerlevel=1
  do riend with llRetVal
ENDIF at the end of the highest trigger level
SELECT (lcStartArea)
RETURN llRetVal
** "结束参照完整性删除触发器" 学生信息
********************************************************************************

********************************************************************************
procedure __RI_UPDATE_学生信息
** "参照完整性更新触发器" 学生信息
LOCAL llRetVal
llRetVal = .t.
PRIVATE pcParentDBF,pnParentRec,pcChildDBF,pnChildRec,pcParentID,pcChildID
PRIVATE pcParentExpr,pcChildExpr
STORE "" TO pcParentDBF,pcChildDBF,pcParentID,pcChildID,pcParentExpr,pcChildExpr
STORE 0 TO pnParentRec,pnChildRec
IF _triggerlevel=1
  BEGIN TRANSACTION
  PRIVATE pcRIcursors,pcRIwkareas,pcRIolderror,pnerror,;
  pcOldDele,pcOldExact,pcOldTalk,pcOldCompat,PcOldDBC
  pcOldTalk=SET("TALK")
  SET TALK OFF
  pcOldDele=SET("DELETED")
  pcOldExact=SET("EXACT")
  pcOldCompat=SET("COMPATIBLE")
  SET COMPATIBLE OFF
  SET DELETED ON
  SET EXACT OFF
  pcRIcursors=""
  pcRIwkareas=""
  pcRIolderror=ON("error")
  pnerror=0
  ON ERROR pnerror=rierror(ERROR(),message(),message(1),program())
  IF TYPE('gaErrors(1)')<>"U"
    release gaErrors
  ENDIF
  PUBLIC gaErrors(1,12)
  pcOldDBC=DBC()
  SET DATA TO ("学生管理")
ENDIF first trigger
LOCAL lcParentID && parent's value to be sought in child
LOCAL lcOldParentID && previous parent id value
LOCAL lcChildWkArea && child work area handle returned by riopen
LOCAL lcChildID && child's value to be sought in parent
LOCAL lcOldChildID && old child id value
LOCAL lcParentWkArea && parentwork area handle returned by riopen
LOCAL lcStartArea
lcStartArea=select()
llRetVal=.t.
lcParentWkArea=select()
SELECT (lcParentWkArea)
pcParentDBF=dbf()
pnParentRec=recno()
lcOldParentID=OLDVAL("学号")
pcParentID=lcOldParentID
pcParentExpr="学号"
lcParentID=学号
IF lcParentID<>lcOldParentID
  lcChildWkArea=riopen("学生成绩表")
  IF lcChildWkArea<=0
    IF _triggerlevel=1
      DO riend WITH .F.
    ENDIF at the end of the highest trigger level
    SELECT (lcStartArea)
    RETURN .F.
  ENDIF not able to open the child work area
  pcChildDBF=dbf(lcChildWkArea)
  SELECT (lcChildWkArea)
  SCAN FOR 学号=lcOldParentID
    pnChildRec=recno()
    pcChildID=学号
    pcChildExpr="学号"
    IF NOT llRetVal
      EXIT
    ENDIF && not llretval
    llRetVal=riupdate("学号",lcParentID,"学生信息")
  ENDSCAN get all of the 学生成绩表 records
  =rireuse("学生成绩表",lcChildWkArea)
  IF NOT llRetVal
    IF _triggerlevel=1
      DO riend WITH llRetVal
    ENDIF at the end of the highest trigger level
    SELECT (lcStartArea)
    RETURN llRetVal
  ENDIF
ENDIF this parent id changed
IF _triggerlevel=1
  do riend with llRetVal
ENDIF at the end of the highest trigger level
SELECT (lcStartArea)
RETURN llRetVal
** "结束参照完整性更新触发器" 学生信息
********************************************************************************
**__RI_FOOTER!@ Do NOT REMOVE or MODIFY this line!!!! @!__RI_FOOTER**
12

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