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CREATE TABLE camioneros
(
nombre CHAR(18) NULL ,
cedula CHAR(18) NOT NULL ,
telefono CHAR(18) NULL ,
direccion CHAR(18) NULL ,
salario CHAR(18) NULL ,
destinatario CHAR(18) NULL ,
matricula CHAR(18) NULL
);
CREATE UNIQUE INDEX XPKcamioneros ON camioneros
(cedula ASC);

ALTER TABLE camioneros
ADD CONSTRAINT XPKcamioneros PRIMARY KEY (cedula);
CREATE TABLE camiones
(
matricula CHAR(18) NOT NULL ,
modelo CHAR(18) NULL ,
tipo CHAR(18) NULL ,
potencia CHAR(18) NULL
);
CREATE UNIQUE INDEX XPKcamiones ON camiones
(matricula ASC);
ALTER TABLE camiones
ADD CONSTRAINT XPKcamiones PRIMARY KEY (matricula);

CREATE TABLE paquete
(
codigo CHAR(18) NOT NULL ,
provincia CHAR(18) NULL ,
nombre CHAR(18) NULL ,
cedula CHAR(18) NULL
);
CREATE UNIQUE INDEX XPKpaquete ON paquete
(codigo ASC);
ALTER TABLE paquete
ADD CONSTRAINT XPKpaquete PRIMARY KEY (codigo);
CREATE TABLE provincias
(
codigo CHAR(18) NOT NULL ,
nombre CHAR(18) NULL
);

CREATE UNIQUE INDEX XPKprovincias ON provincias
(codigo ASC);
ALTER TABLE provincias
ADD CONSTRAINT XPKprovincias PRIMARY KEY (codigo);
ALTER TABLE camioneros
ADD (CONSTRAINT R_4 FOREIGN KEY (matricula) REFERENCES camiones (matricula) ON DELETE SET NULL);
ALTER TABLE paquete
ADD (CONSTRAINT R_3 FOREIGN KEY (codigo) REFERENCES provincias (codigo));
ALTER TABLE paquete
ADD (CONSTRAINT R_5 FOREIGN KEY (cedula) REFERENCES camioneros (cedula) ON DELETE SET NULL);

CREATE TRIGGER tI_camioneros BEFORE INSERT ON camioneros for each row
-- ERwin Builtin Trigger
-- INSERT trigger on camioneros
DECLARE NUMROWS INTEGER;
BEGIN
/* ERwin Builtin Trigger */
/* camiones camioneros on child insert set null */
/* ERWIN_RELATION:CHECKSUM="0000ef67", PARENT_OWNER="", PARENT_TABLE="camiones"
CHILD_OWNER="", CHILD_TABLE="camioneros"
P2C_VERB_PHRASE="", C2P_VERB_PHRASE="",
FK_CONSTRAINT="R_4", FK_COLUMNS="matricula" */
UPDATE camioneros
SET
/* %SetFK(camioneros,NULL) */
camioneros.matricula = NULL
WHERE
NOT EXISTS (
SELECT * FROM camiones
WHERE
/* %JoinFKPK(:%New,camiones," = "," AND") */
:new.matricula = camiones.matricula
)
/* %JoinPKPK(camioneros,:%New," = "," AND") */
and camioneros.cedula = :new.cedula;

END;
/
CREATE TRIGGER tD_camioneros AFTER DELETE ON camioneros for each row
-- DELETE trigger on camioneros
BEGIN
/* camioneros paquete on parent delete set null */
/* ERWIN_RELATION:CHECKSUM="0000abe1", PARENT_OWNER="", PARENT_TABLE="camioneros"
CHILD_OWNER="", CHILD_TABLE="paquete"
FK_CONSTRAINT="R_5", FK_COLUMNS="cedula" */
UPDATE paquete
SET
/* %SetFK(paquete,NULL) */
paquete.cedula = NULL
WHERE
/* %JoinFKPK(paquete,:%Old," = "," AND") */
paquete.cedula = :old.cedula;

END;
/
CREATE TRIGGER tU_camioneros AFTER UPDATE ON camioneros for each row
-- UPDATE trigger on camioneros
BEGIN
/* camioneros paquete on parent update set null */
/* ERWIN_RELATION:CHECKSUM="0001e0e9", PARENT_OWNER="", PARENT_TABLE="camioneros"
IF
/* %JoinPKPK(:%Old,:%New," <> "," OR ") */
:old.cedula <> :new.cedula
THEN
UPDATE paquete
SET
WHERE
/* %JoinFKPK(paquete,:%Old," = ",",") */
paquete.cedula = :old.cedula;
END IF;

/* camiones camioneros on child update no action */
/* ERWIN_RELATION:CHECKSUM="00000000", PARENT_OWNER="", PARENT_TABLE="camiones"
SELECT count(*) INTO NUMROWS
FROM camiones
WHERE
/* %JoinFKPK(:%New,camiones," = "," AND") */
:new.matricula = camiones.matricula;
IF (
/* %NotnullFK(:%New," IS NOT NULL AND") */
:new.matricula IS NOT NULL AND
NUMROWS = 0
)
THEN
raise_application_error(
-20007,
'Cannot update camioneros because camiones does not exist.'
);
END IF;

END;
/
CREATE TRIGGER tD_camiones AFTER DELETE ON camiones for each row
-- DELETE trigger on camiones
BEGIN
/* camiones camioneros on parent delete set null */
/* ERWIN_RELATION:CHECKSUM="0000b734", PARENT_OWNER="", PARENT_TABLE="camiones"
UPDATE camioneros
SET
WHERE
/* %JoinFKPK(camioneros,:%Old," = "," AND") */
camioneros.matricula = :old.matricula;
END;

/
CREATE TRIGGER tU_camiones AFTER UPDATE ON camiones for each row
-- UPDATE trigger on camiones
BEGIN
/* camiones camioneros on parent update set null */
/* ERWIN_RELATION:CHECKSUM="0000d8e3", PARENT_OWNER="", PARENT_TABLE="camiones"
IF
:old.matricula <> :new.matricula
THEN
UPDATE camioneros
SET
WHERE
/* %JoinFKPK(camioneros,:%Old," = ",",") */
camioneros.matricula = :old.matricula;
END IF;

END;
/
CREATE TRIGGER tI_paquete BEFORE INSERT ON paquete for each row
-- INSERT trigger on paquete
BEGIN
/* provincias paquete on child insert restrict */
/* ERWIN_RELATION:CHECKSUM="0001e783", PARENT_OWNER="", PARENT_TABLE="provincias"
FK_CONSTRAINT="R_3", FK_COLUMNS="codigo" */
FROM provincias
WHERE
/* %JoinFKPK(:%New,provincias," = "," AND") */
:new.codigo = provincias.codigo;
IF (
NUMROWS = 0
)

THEN
-20002,
'Cannot insert paquete because provincias does not exist.'
);
END IF;
/* camioneros paquete on child insert set null */
/* ERWIN_RELATION:CHECKSUM="00000000", PARENT_OWNER="", PARENT_TABLE="camioneros"
UPDATE paquete
SET
WHERE
NOT EXISTS (
SELECT * FROM camioneros
WHERE
/* %JoinFKPK(:%New,camioneros," = "," AND") */
:new.cedula = camioneros.cedula
)
/* %JoinPKPK(paquete,:%New," = "," AND") */
and paquete.codigo = :new.codigo;

END;
/
CREATE TRIGGER tU_paquete AFTER UPDATE ON paquete for each row
-- UPDATE trigger on paquete
BEGIN
/* provincias paquete on child update restrict */
/* ERWIN_RELATION:CHECKSUM="0002069f", PARENT_OWNER="", PARENT_TABLE="provincias"
FROM provincias
WHERE
/* %JoinFKPK(:%New,provincias," = "," AND") */
:new.codigo = provincias.codigo;
IF (
NUMROWS = 0

)
THEN
-20007,
'Cannot update paquete because provincias does not exist.'
);
END IF;
/* camioneros paquete on child update no action */
/* ERWIN_RELATION:CHECKSUM="00000000", PARENT_OWNER="", PARENT_TABLE="camioneros"
FROM camioneros
WHERE
/* %JoinFKPK(:%New,camioneros," = "," AND") */
:new.cedula = camioneros.cedula;
IF (
:new.cedula IS NOT NULL AND
NUMROWS = 0
)
THEN

-20007,
'Cannot update paquete because camioneros does not exist.'
);
END IF;
END;
/
CREATE TRIGGER tD_provincias AFTER DELETE ON provincias for each row
-- DELETE trigger on provincias
BEGIN
/* provincias paquete on parent delete restrict */
/* ERWIN_RELATION:CHECKSUM="0000d337", PARENT_OWNER="", PARENT_TABLE="provincias"
FROM paquete
WHERE

paquete.codigo = :old.codigo;
IF (NUMROWS > 0)
THEN
-20001,
'Cannot delete provincias because paquete exists.'
);
END IF;
END;
/
CREATE TRIGGER tU_provincias AFTER UPDATE ON provincias for each row
-- UPDATE trigger on provincias
BEGIN
/* provincias paquete on parent update restrict */
/* ERWIN_RELATION:CHECKSUM="0000fe23", PARENT_OWNER="", PARENT_TABLE="provincias"
IF

:old.codigo <> :new.codigo
THEN
FROM paquete
WHERE
paquete.codigo = :old.codigo;
IF (NUMROWS > 0)
THEN
-20005,
'Cannot update provincias because paquete exists.'
);
END IF;
END IF;
END;
/

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