Delete details records automatically

Hello support,
in the properties of a relation between main table and detail table it should be possible to define

the behaviour of PHPRunner concerning deletion of records.
a) Don't allow deletion of master record if detail records exist and give a message to enduser OR

<img src='https://asprunner.com/forums/file.php?topicimage=1&fieldname=question&id=13272&image=1&table=forumtopics' class='bbc_emoticon' alt='B)' /> automatically delete detail records if master record is deleted
Best regards

Uwe Pfeiffer