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CIW 1D0-541 Exam - Topic 4 Question 106 Discussion

Actual exam question for CIW's 1D0-541 exam
Question #: 106
Topic #: 4
[All 1D0-541 Questions]

Consider the following relation definition:

STUDENT(

Student_Number: integer NOT NULL

Name: variable length character string length 20 NOT NULL)

Primary Key Student_Number

HOUSING(

Housing_ID: integer NOT NULL

Student_Number: integer NOT NULL

Building: variable length character string length 25 NOT NULL)

Primary Key Housing_ID

Foreign Key Student_Number References

STUDENT(Student_Number)

ON DELETE NO CHECK

ON UPDATE

Which integrity constraint is violated in this relation definition?

Show Suggested Answer Hide Answer
Suggested Answer: C

by Alesia at Jan 22, 2025, 04:03 PM

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Talia
3 months ago
Domain constraint seems fine, so it must be referential!
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Catrice
3 months ago
I think it's more about entity integrity, not sure though.
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Dana
3 months ago
Wait, is there really a problem with the ON DELETE clause?
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Selene
4 months ago
Totally agree, it's about the foreign key!
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Carline
4 months ago
Looks like referential integrity is the issue here.
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Rochell
4 months ago
I thought entity integrity was about primary keys, so maybe that’s not the right answer. Could it be domain constraint instead?
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Elizabeth
4 months ago
I’m a bit confused about the ON DELETE NO CHECK part. Does that affect the integrity constraints? I can't recall if it relates to entity integrity.
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Kimbery
4 months ago
This question feels familiar; I practiced one about foreign keys last week. I believe the issue might be with the foreign key constraint.
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Leonida
5 months ago
I think I remember something about referential integrity being important for foreign keys, but I'm not entirely sure how it applies here.
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Jolanda
5 months ago
Confident I can get this one. The key is recognizing that the ON DELETE NO CHECK option on the foreign key violates referential integrity, since it allows deleting a student record without updating the corresponding housing record.
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Tiffiny
5 months ago
Okay, I think I've got this. The violation is in the referential integrity constraint, since the foreign key in HOUSING references STUDENT but has ON DELETE NO CHECK, which allows orphan records.
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Marge
5 months ago
Hmm, I'm a bit confused by the ON DELETE NO CHECK and ON UPDATE parts of the foreign key definition. I'll need to double-check my understanding of those options.
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Layla
5 months ago
This looks like a straightforward database integrity question. I'll carefully review the relation definitions and think through the different types of integrity constraints.
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Ammie
10 months ago
I'm with Cammy on this one. Enterprise constraint? Sounds like something straight out of a sci-fi novel. If I see that on the exam, I'm just going to start doodling spaceships in the margins.
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Arletta
8 months ago
So, it's not about spaceships then?
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Ronald
9 months ago
I think you're right. It's about maintaining consistency between related tables.
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Filiberto
9 months ago
No, it's not enterprise constraint. It's referential integrity.
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Cammy
10 months ago
Haha, you guys are overthinking this. The answer is clearly D) Enterprise constraint. I mean, who even knows what that is? The exam writers are just trying to trip us up!
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Rima
9 months ago
Haha, you guys are overthinking this. The answer is clearly D) Enterprise constraint. I mean, who even knows what that is? The exam writers are just trying to trip us up!
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Kris
9 months ago
C) Referential integrity
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Rosina
9 months ago
B) Domain constraint
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Domitila
9 months ago
A) Entity integrity
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Detra
10 months ago
Hold up, y'all. I bet the real answer is A) Entity integrity. I mean, the STUDENT relation has a primary key, but what if two students have the same name? Wouldn't that be a violation of entity integrity?
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Dorothea
10 months ago
I'm not so sure about that. The question says the relation definition has an issue, so I'm leaning towards B) Domain constraint. Maybe there's something funky with the data types or lengths of the attributes?
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Stephen
10 months ago
Hmm, this one's tricky. I think the answer is C) Referential integrity, since the HOUSING relation has a foreign key that references the STUDENT relation, but the ON DELETE constraint is set to NO CHECK, which could lead to dangling references.
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Arminda
10 months ago
Yes, having the ON DELETE set to NO CHECK can cause issues with maintaining the relationship between the two tables.
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Corrina
10 months ago
I agree, the referential integrity constraint is violated in this case.
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Carmelina
10 months ago
I believe the correct answer is C) Referential integrity because the foreign key reference is not properly set up.
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Lura
11 months ago
I agree with Catarina, the foreign key constraint is not properly defined.
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Catarina
11 months ago
I think the integrity constraint violated is referential integrity.
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