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Which description defines a data type?
Suggested Answer: A
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A data type defines the kind of data a column can store in a database. It ensures data consistency and efficient storage.
Option A (Correct): A data type is a named set of values, such as INTEGER, VARCHAR, DATE, etc.
Option B (Incorrect): A tuple refers to a row in a relational database, not a data type.
Option C (Incorrect): Data types define column values, but they do not correspond directly to columns.
Option D (Incorrect): Data types do not have a varying set of rows; they define attributes for columns.
33 comments · newest first
CH
Cherry
2 days ago
I lean towards C. Columns need specific types.
ED
Edison
7 days ago
I think A is correct. Named set of values makes sense.
SH
Shalon
12 days ago
D sounds confusing. Rows vary, but types need clarity.
BE
Belen
18 days ago
C makes sense. Columns need specific values.
VA
Vannessa
23 days ago
I feel B is misleading. Unnamed tuples don't define types well.
BE
Bernardine
28 days ago
I think A is correct. Named sets are clear.
RE
Renea
1 month ago
D is confusing. Rows vary, but names matter more.
GA
Gaston
1 month ago
C could work too. Columns are important in data types.
ME
Mel
1 month ago
I agree with Alice. A defines it well.
JO
Joana
2 months ago
I think A is the best choice. Named sets are clear.
MA
Mariko
2 months ago
C is also a good option, but A is clearer.
EL
Ellsworth
2 months ago
Wait, are we sure about A? Sounds too simple.
CH
Charlene
2 months ago
B doesn't make sense, it's not a data type.
TI
Tish
2 months ago
Totally agree with A!
NA
Na
2 months ago
A) It is a named set of values.
MA
Marsha
3 months ago
C is also a good option, but A is the best!
LO
Loreen
3 months ago
Wait, are we sure about A? Sounds too simple.
VI
Vicente
3 months ago
B doesn't make sense, that's not a data type.
KE
Keith
3 months ago
Totally agree with A!
LA
Lashandra
3 months ago
A) It is a named set of values.
DA
Dalene
4 months ago
C is also a good point, but A is the best fit.
SH
Sherita
5 months ago
Wait, is it really just A? Seems too simple.
MA
Maxima
5 months ago
B doesn't make sense at all.
QU
Queenie
5 months ago
Totally agree with A!
EL
Eloisa
6 months ago
A) It is a named set of values.
AI
Aimee
6 months ago
I could be wrong, but D sounds a bit off to me; I don't recall data types having rows like that.
TA
Tawna
6 months ago
I practiced a question similar to this, and I feel like A makes the most sense since it emphasizes naming.
LA
Lashawn
6 months ago
I'm not entirely sure, but I remember something about data types being related to how values are organized, maybe C?
DO
Dominque
6 months ago
I think a data type is more about having a named set of values, so I might lean towards A.
JO
Johnetta
6 months ago
I’m torn between A and C. A seems right, but C makes sense too since it relates to how data is organized.
EL
Elbert
7 months ago
I feel like I've seen a question like this before, and I think D sounds familiar, but I'm not confident.
LA
Lashaunda
7 months ago
I'm not entirely sure, but I remember something about data types having specific structures. Could it be C?
LE
Leontine
7 months ago
I think a data type is more about a named set of values, so I might lean towards A.