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Which of the following best describes the ON DELETE NO ACTION referential integrity
constraint?
Suggested Answer: A
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33 comments · newest first
AM
Amina
11 months ago
C for sure! Otherwise, it could mess up the whole database.
CH
Cheryl
11 months ago
B is misleading, there’s always a check for referential integrity.
HO
Hoa
12 months ago
Wait, is that really how it works? I thought it was different.
NA
Na
12 months ago
Totally agree with C! Makes sense for data integrity.
DA
Daniela
1 year ago
C is the correct answer! Parent can't be deleted if there are child references.
LA
Larae
1 year ago
I feel like I might be confusing this with ON DELETE CASCADE. I just can't recall if NO ACTION means it does nothing or if it prevents deletion like option C suggests.
CR
Cristen
1 year ago
I practiced a question similar to this, and I remember that ON DELETE NO ACTION prevents deletion of the parent if there are existing child references. So, I think option C is correct.
GW
Gwen
1 year ago
I'm not entirely sure, but I remember something about referential integrity constraints. I think it might be related to option C, but I could be mixing it up with another type of constraint.
DE
Devorah
1 year ago
I think ON DELETE NO ACTION means that if you try to delete a parent key, it won't let you if there are child keys referencing it.
CH
Chauncey
1 year ago
Okay, let me break this down. Ensuring data is only accessed by authorized people - that sounds like confidentiality to me. I'm going with D.
CR
Cruz
1 year ago
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.
CO
Corazon
1 year ago
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.
BR
Brandee
1 year ago
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.
LA
Lavelle
1 year ago
That's correct, the application needs to handle the referential integrity.
RO
Rochell
1 year ago
So, the database won't automatically delete child keys?
WI
William
1 year ago
I agree, ON DELETE NO ACTION means no special action is taken.
RU
Ruby
1 year ago
I think B is the correct option.
CH
Cherelle
1 year ago
Exactly, it's important for the application to manage that.
SH
Shizue
1 year ago
So, the application has to handle the referential integrity.
DE
Desiree
1 year ago
I agree, NO ACTION means no special action is taken.
ME
Mel
1 year ago
I think B is the correct option.
PR
Precious
1 year ago
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!
RY
Ryan
2 years ago
But if the parent key is deleted, wouldn't it make sense for the child keys to be set to a specified value?
VE
Verlene
2 years ago
I disagree, I believe the answer is D.
YO
Yolande
2 years ago
I was going to choose C, but then I realized that would be the ON DELETE RESTRICT constraint, not NO ACTION. B makes the most sense here.
JU
Justa
1 year ago
Yes, B is the right choice for this referential integrity constraint.
DO
Dortha
1 year ago
I was also considering C at first, but B is the correct option.
JA
James
1 year ago
Yes, B is the correct answer for ON DELETE NO ACTION.
AN
Annice
1 year ago
I think B is the correct answer.
TA
Tarra
1 year ago
I agree, B is the best choice for ON DELETE NO ACTION.
NI
Nickole
1 year ago
I think B is the correct answer.
GL
Gladys
2 years ago
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.
RY
Ryan
2 years ago
I think the answer is C.