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PostgreSQL PGCES-02 Exam - Topic 2 Question 101 Discussion

The following is the result of executing the createlang command which is installed withPostgreSQL. $ createlang -U postgres --list mydb Procedural Languages Name |Trusted?---------+---------plpgsql | yes Select two correct statements from below.
B) The procedural language plpgsql can be used in the database mydb. and E) plpgsql is a safe language with restricted operations.
A) The procedural language plpgsql is installed in the database mydb using the above command.
C) plpgsql is a trusted language, so it can execute the OS commands on the server side.
D) plpgsql is a trusted language, so it can read/write OS files on the server side.

PostgreSQL PGCES-02 Exam - Topic 2 Question 101 Discussion

Actual exam question for PostgreSQL's PGCES-02 exam
Question #: 101
Topic #: 2
[All PGCES-02 Questions]

The following is the result of executing the createlang command which is installed with

PostgreSQL. $ createlang -U postgres --list mydb Procedural Languages Name |

Trusted?

---------+---------plpgsql | yes Select two correct statements from below.

Show Suggested Answer Hide Answer
Suggested Answer: B, E

by Elvis at May 30, 2026, 07:25 PM

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Lewis
I think E is definitely true because plpgsql is designed to be safe, but I need to double-check the definitions of trusted vs. safe.
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Theodora
5 days ago
I feel like C and D might be tricky; I thought trusted languages could do more, but I can't recall the specifics.
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Sommer
10 days ago
I'm not entirely sure, but I think B is also right since the command shows plpgsql is listed for mydb.
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Scot
15 days ago
I remember that plpgsql is indeed installed in the database when using createlang, so A seems correct.
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