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PostgreSQL PGCES-02 Exam - Topic 11 Question 43 Discussion

Select two incorrect statements regarding 'DOMAIN'.
A) When defining a domain, you can add a default value and constraints to the original data.
B) Domain is a namespace existing between databases and objects such as tables.
C) A domain is created by 'CREATE DOMAIN'.
D) A domain can be used as a column type when defining a table.
E) To define a domain, both input and output functions are required.

PostgreSQL PGCES-02 Exam - Topic 11 Question 43 Discussion

Actual exam question for PostgreSQL's PGCES-02 exam
Question #: 43
Topic #: 11
[All PGCES-02 Questions]

Select two incorrect statements regarding 'DOMAIN'.

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Suggested Answer: A

by Viola at Apr 23, 2023, 07:35 PM

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Elouise
8 months ago
I agree with Vivan, B doesn't sound right at all.
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Rana
8 months ago
C is correct, you create a domain with 'CREATE DOMAIN'.
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Chuck
9 months ago
Wait, do you really need both input and output functions for a domain?
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Vivan
9 months ago
I think B is a bit off, domains aren't really a namespace.
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Marg
9 months ago
A domain can definitely be used as a column type.
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Tanja
9 months ago
I remember that a domain can be used as a column type, so D should be correct, but I'm not completely confident about the others.
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Daryl
9 months ago
I practiced a similar question where we had to identify incorrect statements about domains, and I think A is definitely correct.
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Jacinta
9 months ago
I'm not entirely sure, but I feel like option E might be incorrect too. I don't recall needing both functions to define a domain.
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Golda
9 months ago
I think option B sounds a bit off; I remember domains being more about data types rather than a namespace.
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Rex
9 months ago
I'm confident I know the answer to this. It's a straightforward question.
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Lavonda
9 months ago
This seems like a tricky question. I'll need to carefully consider the pros and cons of decentralized risk registers.
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Denae
9 months ago
Okay, let's see. The question mentions a full mesh of mesh-SDPs within each metro, and a spoke-SDP between PE-C and PE-B. That's an important detail.
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Eric
10 months ago
Hmm, I'm a bit unsure about this one. I'll have to review my notes on malicious intermediary attacks to make sure I understand the possible outcomes.
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Noemi
10 months ago
This question seems straightforward. Encryption is challenging because it hides the contents of network traffic, making it harder for security monitoring tools to analyze and detect threats.
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Hester
1 year ago
Wait, so are we supposed to select the two incorrect statements, or the two correct ones? This domain debate is starting to feel a bit like a domain name dispute!
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Leigha
1 year ago
I heard the exam committee was really dominating the question selection process this year. Looks like they wanted to make sure we knew our domains inside and out!
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Elli
1 year ago
C) A domain is created by 'CREATE DOMAIN'.
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Tijuana
1 year ago
B) Domain is a namespace existing between databases and objects such as tables.
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Fallon
1 year ago
A) When defining a domain, you can add a default value and constraints to the original data.
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Arlette
1 year ago
Yep, B and E are the ones to go with. Domains are all about data types, not namespaces or input/output functions. Though I do wonder if the person who wrote this question was just testing our domain knowledge, or if they were trying to trip us up with some SQL trivia.
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Kattie
1 year ago
Yeah, it seems like they were trying to trip us up with some SQL trivia.
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Julianna
1 year ago
I think the person who wrote the question was just testing our domain knowledge.
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Lindsey
1 year ago
I agree, B and E are definitely incorrect. Domains are all about data types.
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Romana
1 year ago
Hmm, I'm not sure about option A. Can you really add a default value and constraints to a domain? That seems like it would be more of a table-level thing.
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Novella
1 year ago
User 2: Yeah, that's right. Those belong at the table level, not the domain level.
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Gwen
1 year ago
User 1: No, you can't add a default value and constraints to a domain.
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Delmy
1 year ago
I agree with Leatha. B and E seem to be the incorrect statements here. Domains are not related to namespaces or databases, and you don't need both input and output functions.
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Gerri
1 year ago
I agree with both of you. Statement B and E are indeed incorrect.
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Tandra
1 year ago
I believe statement E is incorrect because only input functions are required to define a domain.
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Leatha
1 year ago
I think options B and E are incorrect. Domains are not namespaces, and you only need an input function to define a domain, not both input and output functions.
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Kayleigh
1 year ago
Yes, that's right. A domain can have a default value and constraints, created with 'CREATE DOMAIN', and used as a column type in a table.
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Adria
1 year ago
So, the correct statements are A, C, and D.
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Wilson
1 year ago
I think option E is incorrect too. You only need an input function to define a domain.
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Gail
1 year ago
I agree, option B is incorrect. Domains are not namespaces.
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Vincent
1 year ago
I think statement B is incorrect because a domain is not a namespace.
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