adding a foreign key constraint in stax

hi all..
I am new to Stax. I am creating foreign key constraints on the tables. The constraints are creted visibly but there was no impact on the table insertion data even though data is inserted against the constraint. Can any one help me out in letting the problem. I am creating the foreign key constraint as below..

ALTER TABLE schoolprograms ADD CONSTRAINT fk_schoolInfoId
FOREIGN KEY (schoolInfoId)
REFERENCES schoolinfo (schoolInfoId) ON DELETE CASCADE ON


and I also have a small doubt arised due to this situation that "Wil the stax application support foreign key constraints"
.. Any small help wil be helpful.

Thanks in advance