Database Online Test
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The database online test assesses candidates' knowledge of SQL queries and relational database concepts, such as indexes and constraints.
It's an ideal test for pre-employment screening. A good database admin, back-end developer, or data analyst needs a solid understanding of SQL to interface and access an SQL database efficiently.
This online test requires candidates to write SQL queries that extract, combine, and manipulate data.
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Free Sample Questions for Database Test
Our sample questions are free for companies to use on a trial plan. See more about our premium questions for paid plans below.
Students
Given the following data definition, write a query that returns the number of students whose first name is John. String comparisons should be case sensitive.
TABLE students id INTEGER PRIMARY KEY, firstName VARCHAR(30) NOT NULL, lastName VARCHAR(30) NOT NULL
Enrollment
A table containing the students enrolled in a yearly course has incorrect data in records with ids between 20 and 100 (inclusive).
TABLE enrollments id INTEGER NOT NULL PRIMARY KEY year INTEGER NOT NULL studentId INTEGER NOT NULL
Write a query that updates the field 'year' of every faulty record to 2015.
Pets
Information about pets is kept in two separate tables:
TABLE dogs id INTEGER NOT NULL PRIMARY KEY, name VARCHAR(50) NOT NULL TABLE cats id INTEGER NOT NULL PRIMARY KEY, name VARCHAR(50) NOT NULL
Write a query that select all distinct pet names.
See the example case for more details.
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Premium Questions for Database Test
TestDome offers a premium questions library with 1000+ unique, hand-crafted questions whose answers can’t be found online. If you spot an answer somewhere online, we’ll give you a refund.
Question Names
These premium questions are included in this pre-built test and can be added to any multi-skill test. Please sign up for a paid plan to view the questions in detail.
Roads, ATM Locations, Authors, Autocomplete, Ban Users, Bank Branches, Cheapest Product, Countries, Developers, Employee Manager, Hospital Patients, Index Performance, Menu Items, Merge Stock Index, Movies, Movies Live, Projects, Rectangles, Restaurant Menu, Retirees, Sales, SMS Messages, Tasks, Youngest Child, Delete Orders, Average Salary, Auto Show, Poll, Department Report, Student Rankings, Student Max Score, Ingredients, Users and Accounts, Matching Clothes, Agents, River Discharge, Manager Sales, Movie Genres, Student Activities, Welfare Organization, TransactionsCovered Skills
Testing of these skills is covered in this pre-built test because they’re closely related. On our paid plan, you can easily create your own custom multi-skill tests.
SQLRecommended Job Roles
These are the job roles that we recommend for the Database online test.
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