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About the test

The VB.NET and SQL online test assesses candidates' knowledge of programming in the VB.NET language and their ability to use SQL.

It's an ideal test for pre-employment screening. A good VB.NET developer needs to be able not only to solve problems using VB.NET but also to write and analyze SQL queries to access a database.

This online test requires candidates to solve coding problems in VB.NET and to write SQL queries that extract, combine, and manipulate data.

Sample public questions

Easy
10 min
code
Public
VB.NET
Arrays

Implement the UniqueNames method. When passed two arrays of names, it will return an array containing the names that appear in either or both arrays. The returned array should have no duplicates.

For example, calling MergeNames.UniqueNames({'Ava', 'Emma', 'Olivia'}, {'Olivia', 'Sophia', 'Emma'}) should return an array containing Ava, Emma, Olivia, and Sophia in any order.

Easy
7 min
code
Public
SQL
Aggregation
Group by
Select

App usage data are kept in the following table:

TABLE sessions
  id INTEGER PRIMARY KEY,
  userId INTEGER NOT NULL,
  duration DECIMAL NOT NULL

Write a query that selects userId and average session duration for each user who has more than one session.

See the example case for more details.

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45 more premium VB.NET and SQL questions

Shipping, Hobbies, Paragraph, Roads, Authors, Autocomplete, Bank Branches, Cheapest Product, Countries, Developers, Hospital Patients, Index Performance, Menu Items, Movies, Projects, Rectangles, Restaurant Menu, Retirees, SMS Messages, Poll, Users and Accounts, Matching Clothes, Agents, Sales, Employee Manager, Auto Show, Delete Orders, Welfare Organization, Tasks, Manager Sales, Student Rankings, Student Activities, Youngest Child, Movies Live, Department Report, Ingredients, Average Salary, Movie Genres, River Discharge, ATM Locations, Log Parser, Transactions, Merge Stock Index, Ban Users, Prefix.

Skills and topics tested

  • VB.NET
  • Arithmetic
  • Dictionary
  • Iteration
  • Lists
  • Regex
  • Strings
  • SQL
  • Conditions
  • Views
  • Select
  • Create Index
  • Database Schema
  • Performance Tuning
  • Constraints
  • Create Table
  • Aggregation
  • Subqueries
  • Ordering
  • Bug Fixing
  • Indexes
  • Alter Table
  • Group by
  • Update
  • Insert
  • Joins
  • Left Join
  • Right Join
  • Delete
  • SQL CASE
  • Union
  • CTE
  • Database Normalization
  • Serialization
  • XML
  • LINQ

For job roles

  • .NET Developer
  • Back-End Developer
  • SQL Developer
  • VB.NET Developer
  • Web Developer

Sample candidate report

What others say

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Simple, straight-forward technical testing

TestDome is simple, provides a reasonable (though not extensive) battery of tests to choose from, and doesn't take the candidate an inordinate amount of time. It also simulates working pressure with the time limits.

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