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CIW 1D0-541 Exam - Topic 8 Question 120 Discussion

Actual exam question for CIW's 1D0-541 exam
Question #: 120
Topic #: 8
[All 1D0-541 Questions]

Which relational algebraic operation is used to select specific columns (attributes) from a

relation?

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Suggested Answer: C

by Judy at Jan 05, 2026, 05:16 AM

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Farrah
3 days ago
Projection is the way to go. Wouldn't want to end up with a bunch of extra columns, am I right?
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Erasmo
24 days ago
Projection, definitely. Anything else would just be a mess.
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Phuong
29 days ago
Hmm, I'd say Projection is the way to go. Keeps things nice and tidy.
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Cordelia
1 month ago
Projection, of course! Gotta get those specific columns, am I right?
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Vilma
1 month ago
I feel like Projection is the answer, but I might confuse it with something else like Selection, which is for rows.
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Shawnda
1 month ago
Union and Intersection are definitely for combining sets, but I can't recall if Projection is the exact term for selecting columns.
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Desiree
2 months ago
I remember practicing a question similar to this, and I believe Projection was the right answer.
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Wai
2 months ago
I think the operation for selecting specific columns is called Projection, but I'm not entirely sure.
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Fannie
2 months ago
I'm a little unsure between the projection and intersection operations here. I know projection has something to do with selecting columns, but I can't quite remember the details. I'll have to review my notes before answering this.
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Malcom
2 months ago
The projection operation, that's the one I was thinking of. It lets you choose which attributes or columns you want to keep from a relation. I feel confident about this one.
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Detra
2 months ago
Okay, I remember learning about the different relational algebra operations. I'm pretty sure the projection operation is the one that allows you to select specific columns from a relation. I'll mark that as my answer.
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Jani
3 months ago
Hmm, I'm a bit confused on this one. Is it the projection operation that selects columns? Or maybe it's the union operation? I'll have to think this through carefully.
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Twila
3 months ago
I think the projection operation is used to select specific columns from a relation, but I'm not 100% sure.
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