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# Referential Integrity test
#
# The assumption here is that the application code issuing the SELECT
# to test for the presence or absence of a related record would do the
# right thing -- this script doesn't include that logic.
#
# Any overlap between the transactions must cause a serialization failure.
setup
{
CREATE TABLE a (i int PRIMARY KEY);
CREATE TABLE b (a_id int);
INSERT INTO a VALUES (1);
}
teardown
{
DROP TABLE a, b;
}
session "s1"
setup { BEGIN ISOLATION LEVEL SERIALIZABLE; }
step "rx1" { SELECT i FROM a WHERE i = 1; }
step "wy1" { INSERT INTO b VALUES (1); }
step "c1" { COMMIT; }
session "s2"
setup { BEGIN ISOLATION LEVEL SERIALIZABLE; }
step "rx2" { SELECT i FROM a WHERE i = 1; }
step "ry2" { SELECT a_id FROM b WHERE a_id = 1; }
step "wx2" { DELETE FROM a WHERE i = 1; }
step "c2" { COMMIT; }
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