Can't delete master record when matching when matching detail record exist

Hi
on the rel. property:
Delete Record Behaviour = cascading
Prevent masterless Operation =yes
Automatic Query = yesCan't delete Record Master & Detail...
On delete getting error msg.
Can't delete master record when matching when matching detail record exist
am i missing something...!
Regards,
Abdetu...

First of all, remember the ripple affect of cascading deletes and updates.
Oracle database allows creating master/detail relationship between tables using foreign keys and allows cascading deletes by defining the FOREIGN KEY constraint with ON DELETE CASCADE clause.
Oracle Forms on the other hand, handle cascade delete thing internally when you set the relation properties.
Now if you have 3 tables with MASTER->DETAIL1->DETAIL2 relationship and you have a form defined with MASTER->DETAIL1 relationship only, it won't let you delete (and save) master or detail record since the third table (DETAIL2) is referencing the rows from DETAIL1 which you are trying to delete.
If DETAIL2 were present on the form, it would have deleted with relation property CASCADING. If you really want that when you delete a master record, all its details should be deleted too, then consider defining FOREIGN KEY constraints with ON DELETE CASCADE and on the form set relation property CASCADING.
And if all master/detail tables are on your form and still it is not allowing you to delete master with cascading, there must be some code preventing it. Check triggers like ON-DELETE, KEY-COMMIT etc what they are doing.

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Can't delete master record when matching when matching detail record exist

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