rahd almaden rahd almaden - 1 month ago 8
SQL Question

O1RA-0229 integrity constraint violated - parent key not found

SQL Database code:

CREATE TABLE MYBUILDING
(
B_NUMBER NUMBER(1) NOT NULL,
NAME VARCHAR2(25) NOT NULL,
ADDRESS VARCHAR2(40) NOT NULL,
P_CODE VARCHAR2(6) ,
FLOOR_NUM_UP NUMBER(3) DEFAULT '1' NOT NULL CHECK (FLOOR_NUM_UP >= 0),
FLOOR_NUM_DOWN NUMBER(3) DEFAULT '0' NOT NULL CHECK (FLOOR_NUM_DOWN >= 0),
CONS_DATE DATE NOT NULL,
PRIMARY KEY (B_NUMBER)
);
-------
CREATE TABLE FLOOR
(
B_NUMBER NUMBER(1) NOT NULL,
F_NUMBER NUMBER(2) NOT NULL CHECK (F_NUMBER >= -4 AND F_NUMBER <= 25),
SPACE_M NUMBER(4) NOT NULL CHECK (SPACE_M > 0),
PRIMARY KEY (B_NUMBER, F_NUMBER),
FOREIGN KEY (B_NUMBER) REFERENCES MYBUILDING
);
------
CREATE TABLE TENANT
(
TENANT_NUM NUMBER(3) NOT NULL,
TENANT_NAME VARCHAR2(40) NOT NULL,
C_NAME VARCHAR2(40) NOT NULL,
C_ADDRESS VARCHAR2(40),
P_CODE VARCHAR2(6),
P_NUMBER NUMBER(12),
PRIMARY KEY (TENANT_NUM)
);
-------
CREATE TABLE LOCATION
(
B_NUMBER NUMBER(1) NOT NULL,
F_NUMBER NUMBER(2) NOT NULL,
L_NUMBER NUMBER(3) NOT NULL CHECK (L_NUMBER > 0 AND L_NUMBER < 100 ),
SPACE_M NUMBER(4) NOT NULL,
RATE NUMBER(5) NOT NULL CHECK (RATE >= 0 AND RATE <= 350),
RENT NUMBER(4) NOT NULL,
S_DATE DATE,
E_DATE DATE,
TENANT_NUM NUMBER(3),
PRIMARY KEY (L_NUMBER, F_NUMBER, TENANT_NUM),
CONSTRAINT FK_TENANT FOREIGN KEY (TENANT_NUM) REFERENCES TENANT ON DELETE SET NULL,
FOREIGN KEY (B_NUMBER, F_NUMBER) REFERENCES FLOOR
);


Hello Everyone! I made a series of tables and i think i did everything correct. i entered my input values on all the tables without a hitch except for the LOCATION table.

this is the Error thats giving me.

INSERT INTO LOCATION VALUES (1, 1, 1, 300, 101, 0, '01-JAN-2004', '30-JUN-2004', 1);
INSERT INTO LOCATION VALUES (1, 1, 1, 300, 101, 0, '01-JAN-2004', '30-JUN-2004', 1)



ERROR at line 1:
ORA-02291: integrity constraint (ASSIGNMENT.FK_TENANT) violated - parent key
not found.


Any help and tips will be appreciated. THanks!

fixed.

CREATE TABLE LOCATION(

B_NUMBER NUMBER(1) NOT NULL,

F_NUMBER NUMBER(2) NOT NULL,

L_NUMBER NUMBER(3) NOT NULL CHECK (L_NUMBER > 0 AND L_NUMBER < 100 ),

SPACE_M NUMBER(4) NOT NULL,


RATE NUMBER(5) NOT NULL CHECK (RATE >= 0 AND RATE <= 350),

RENT NUMBER(4) NOT NULL,

S_DATE DATE,

E_DATE DATE,

TENANT_NUM NUMBER(3) NULL,

PRIMARY KEY (L_NUMBER, B_NUMBER, F_NUMBER, TENANT_NUM),

FOREIGN KEY (TENANT_NUM) REFERENCES TENANT ON DELETE SET NULL,

FOREIGN KEY (B_NUMBER, F_NUMBER) REFERENCES FLOOR

);

Answer

Your insert statement is trying to insert a value into column TENANT_NUM which doesn't exist in the TENANT table - (There's a foreign key constraint on the Location table).

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