CIW 1D0-541 Exam - Topic 4 Question 62 Discussion

Actual exam question for CIW's 1D0-541 exam

Question #: 62
Topic #: 4

Consider the Information Engineering diagram shown in the exhibit. Building_ID, R_ID,

Room_Count and Room_Num are integer numbers, whereas Bldg_Name, Location and

Res_Name are all represented by variable-length strings with a maximum of 20 characters. Which

SQL statement best implements the RESIDENT relation shown in this diagram?

ACREATE TABLE RESIDENT (
R_ID INTEGER NULL PRIMARY KEY,
Room_Num FLOAT,
Res_Name VARCHAR,
Building_ID INTEGER NULL,
FOREIGN KEY Building_ID REFERENCES BUILDING (Building_ID));

BCREATE TABLE RESIDENT (
R_ID INTEGER NOT NULL PRIMARY KEY,
Room_Num BINARY,
Res_Name VARCHAR (20),
Building_ID INTEGER NOT NULL,
FOREIGN KEY Building_ID REFERENCES BUILDING (Building_ID));

CCREATE TABLE RESIDENT (
R_ID INTEGER NOT NULL PRIMARY KEY,
Room_Num INTEGER,
Res_Name VARCHAR (20),
Building_ID INTEGER NOT NULL);

DCREATE TABLE RESIDENT (
R_ID INTEGER NOT NULL PRIMARY KEY,
Room_Num INTEGER,
Res_Name VARCHAR (20),
Building_ID INTEGER NOT NULL,
FOREIGN KEY Building_ID REFERENCES BUILDING (Building_ID));

Show Suggested Answer

Suggested Answer: D

by Latrice at Dec 11, 2022, 11:39 PM

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Renea

4 months ago

I’m surprised they didn’t include a NOT NULL for Res_Name in any option!

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Nohemi

4 months ago

Option B has a BINARY type for Room_Num, that's weird.

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Lynsey

4 months ago

Wait, why is Room_Num INTEGER in D? Shouldn't it be FLOAT?

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Taryn

4 months ago

Totally agree, D covers everything we need!

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Laticia

4 months ago

I think option D is the best choice. It has all the right constraints.

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Gwenn

5 months ago

I’m a bit confused about the foreign key. I feel like it should be included to maintain referential integrity, which makes me favor option D.

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Shawn

5 months ago

I practiced a similar question where VARCHAR needed a length specified. I think Res_Name should definitely be VARCHAR(20) in the correct answer.

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Daisy

5 months ago

I’m not entirely sure, but I think Room_Num should be an INTEGER, not FLOAT or BINARY. That makes me lean towards options C and D.

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Kris

5 months ago

I remember that the primary key should be set to NOT NULL, so I think options A and C are not correct.

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Rosalind

5 months ago

I think the AXIS Q3819-PVE and AXIS M3077-PVE are the two multi-sensor cameras in the list.

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Marguerita

5 months ago

I'm pretty confident I know the solution for this. I'll go with Option C and configure the alias-IP range.

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Nan

5 months ago

Hmm, I'm not too familiar with MAC address forwarding tables. I'll need to think through this step-by-step to make sure I understand what's being asked.

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