Clock
Test duration:
20
min
Notes
No. of questions:
10
Tie
Level of experience:
Entry-level/Mid/Senior

PostgreSQL Test

Our PostgreSQL online test is the preferred pre-employment test for recruiters and hiring managers to hire job-fit candidates for roles such as PostgreSQL Database Administrator, PostgreSQL Database Developer and Senior Database Administrator. PostgreSQL online test reduces time-to-hire by 45% by filtering out irrelevant candidates.

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About

PostgreSQL Online Test

PostgreSQL is an open-source object-relational database system. It has a strong reputation for data integrity, reliability, and robust features.

PostgreSQL runs on major operating systems like UNIX, LINUX, Solaris, UX, etc. It supports all triggers, views, foreign keys, stored procedures, internationalization, and functions and is ACID compliant.

PostgreSQL online test helps tech recruiters and hiring managers to assess the candidate's PostgreSQL programming skills. This pre-employment test is designed by experienced subject matter experts (SME) to assess & hire PostgreSQL experts as per the industry standards.

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How it works

Test Summary

PostgreSQL online test helps you to screen the candidates who possess traits as follows: 

  • Ability to write database code efficiently 
  • Ability to work with SQL and query optimization 
  • Strong knowledge of PostgreSQL commands, relational data model, PL SQL, SQL Table 
  • Ability to build and maintain scalable ETL pipelines 

PostgreSQL online test has a set of questions crafted by industry experts to cope with recent technological developments. Moreover, you can ask us to add customized questions as per the job description. 

 

This PostgreSQL test may contain MCQs (Multiple Choice Questions), MAQs (Multiple Answer Questions), Fill in the Blanks, Whiteboard Questions, Audio / Video Questions, AI-LogicBox (Pseudo-Coding Platform), Coding Simulators, True or False Questions, etc.   

Test Duration
20
No. of Questions
10
Level of Expertise
Entry-level/Mid/Senior
Useful for hiring
  • PostgreSQL Database Administrator
  • PostgreSQL Database Developer
  • Senior Database Administrator-PostgreSQL
Topics Covered
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SQL Statement

The online Postgresql test allows you to evaluate candidates' ability to work on SQL statements.

SQL Transaction

iMocha’s PostgreSQL online test contains questions to check knowledge of a logical unit of work that contains one or more SQL statements.
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Relational data model

The online tech assessment enables you to assess relational model skills to manage data using a structure and language consistent with first-order predicate logic.
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PostgreSQL Commands

The tech skills pre-hire test assesses candidates' PSQL command skills to query data from the PostgreSQL database server faster and more effectively.
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Sample Question
Choose from our 100,000+ questions library or add your own questions to make powerful custom tests.

Question types :

Multiple Option

Topic:

Difficulty:

Hard


Q 1. You have been asked to train « Naive Bayes model for spam detection dataset

Using Python command, what wil you add in the given code at XXXX to deciore, it and train your modal for the given dataset?

import numpy os np

X= nporroyll 3. 2b[1 21 [2.21.[3,21)
Y= nporray(fi.a,a.1))

XXXX

from skinamnaive_bayas import

Gaussianna

otf = Gaussianne()

ceataie(x ¥)

from skinamnaive_bayas import

Gaussianna

otf = Gaussianne()

ceataie(x ¥)

from skinamnaive_bayas import

Gaussianna

otf = Gaussianne()

ceataie(x ¥)

from skinamnaive_bayas import

Gaussianna

otf = Gaussianne()

ceataie(x ¥)

Question types :

Multiple Option

Topic:

Machine teaming

Difficulty:

Hard


Q 1. Q2 Lets assume that you have 6 Pandas DataFrome(af) in the below tole.

Index Code Open High
0 AAPL 19877 70074
1 AAPL 19877 70074
2 AAPL 19877 70074
3 AAPL 19877 70074
4 AAPL 19877 70074

When the following commend is executed, what hoppens to the DatoFrome?

df= defiinat()
Y= nporray(fi.a,a.1))

Index Code Open High
0 AAPL 19877 70074
1 AAPL 19877 70074
2 AAPL 19877 70074
3 AAPL 19877 70074
4 AAPL 19877 70074
Index Code Open High
0 AAPL 19877 70074
1 AAPL 19877 70074
2 AAPL 19877 70074
3 AAPL 19877 70074
4 AAPL 19877 70074
it gives an error becouse of the third row which has on empty string.
None of these

Question types :

Multiple Answer

Topic:

PostgreSQL Commands

Difficulty:

Easy

Question:

Select the CORRECT statements that describe what occurs on the client side when the following command is executed:
pg_ctl -m smart stop

Note: There can be multiple correct answers to this question.


Options

  • Clients will not be able to make new connections.
  • The running transaction for a connected client is rolled back and the connection is disconnected forcibly.
  • Connections are terminated after the currently running transactions have finished.
  • The processes of currently connected clients are processed normally.
  • Connected clients receive a message saying that the server will soon be shut down.
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You can customize this test by
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Setting the difficulty level of the test

Choose easy, medium, or tricky questions from our skill libraries to assess candidates of different experience levels.
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Adding your own
questions to the test

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Requesting a tailor-made test

Receive a tailored assessment created by our subject matter experts to ensure adequate screening.

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