I'm a bit confused on this one. I'm not sure if any of these options would actually improve the stability and reliability. I'll need to review the course material again before answering.
I'm a bit unsure about this one. The image is complex, and the options all sound plausible. I'll need to rely on my network security knowledge to make an informed decision.
Definitely B. NO ACTION means the database doesn't do anything special when deleting the parent key. It's up to the application to handle the referential integrity.
Haha, I almost picked D just for the fun of it. Automatically setting all child keys to a specified value? That's a bit extreme for a 'NO ACTION' constraint!
I think the correct answer is B. The question clearly states 'NO ACTION', which means no test is made for referential integrity when deleting the parent key.
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