When I insert to table new row and after this in the same transaction I delete this row I get such error:
triggered data change violation on relation "tbl_b"
 
I've created database using simple script:
 
CREATE TABLE tbl_a
(
  pn_id         SERIAL,
  pn_a  VARCHAR(400) NOT NULL,
  PRIMARY KEY (pn_id)
);
CREATE TABLE tbl_b
(
  pc_id      INT4 NOT NULL REFERENCES tbl_a (pn_id) ON UPDATE CASCADE ON DELETE CASCADE,
  pc_b       VARCHAR(40) NOT NULL,
  PRIMARY KEY (pc_id, pc_b) 
);
INSERT INTO tbl_a VALUES (1, 'xxx');
 
And this is the sample script that I use to generete this bug:
 
begin transaction;
insert into tbl_b values (1, 'xxx');
delete from tbl_b where pc_id=1;
ERROR:  triggered data change violation on relation "tbl_b"
 
How to solve this problem ?????
 

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