Overriding ForeignKey Constraints Under Certain Conditions To Perform CASCADE DELETE

Jun 5, 2008

Hi,

We have a DB with a heirarchy of tables each connected via Guids and controlled for Delete Operations by Foreign Key Constraints. However, under certain privileged conditions we would like CERTAIN users to be able to perform a Cascade Delete all the way down.

Thus by example we have tables A,B,C,D - Typically once a record is inserted into Table A then we can add multiple records in Table B referencing that new record in Table A...and so on through records in Table C referencing Table B...records in Table D referencing table C. Now when we try and delete that ONE Record in Table A we 'could' implement CASCADE DELETES which would delete all those records in Table B,C,D.

We decided that was too dangerous to implement as Whooosh....all records could be deleted by a non-privileged user deleteing that ONE records in Table A, so we changed the Cascade DELETE to NO ACTION. However, there are times (hah...particularly in Testing !) when we would like a privilegd user to be able to DO that task...i.e. perform a CASCADE delete.

Has anybody got any suggestions on how this would be best, easily and securely implemented.

I have had a brief look at INSTEAD OF Triggers but am not sure about the pitfalls of using this...

ANy help appreciated,

 Cheers,

Desmond. 

 

 

 

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Hello:
Need some serious help with this one...

Background:
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Anyway, because it needs to be cross-DBMS capable, the constraints are that the system used must work for the lowest common denominator....ie, a 'recipe' of steps that will work on all DBMS's.

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This appears possible in SqlServer too --...as long as there are no CASCADE operations.
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So -- please correct me if I am wrong here -- it appears that the operations would be
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I'm pretty new to SQL Server, though I've worked with Access for years. I've got four tables (I'm simplifying) and I need to set up cascade deletes between them. I understand how to create foreign keys and all that, but SQL Server is telling me it can't create my keys because it will create multiple cascade paths. I understand that too, I just need to find a way around it. Here are the tables...

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Hi,
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€¦.
€¦.
€¦.

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€¦.
€¦.
€¦.

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€¦.
€¦.
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FK_Config_Id
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€¦.
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