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Exercism VS DUMMY DATABASE

Compare Exercism VS DUMMY DATABASE and see what are their differences

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Contents:
  1. ยป Base Details
  2. ยป Videos
  3. ยป Reviews
  4. ยป Alternatives

Exercism logo Exercism

Download and solve practice problems in over 30 different languages.

DUMMY DATABASE logo DUMMY DATABASE

Generate and manage synthetic datasets easily with DUMMY DATABASE
  • Exercism Landing page
    Landing page //
    2023-06-28
  • DUMMY DATABASE Main page
    Main page //
    2025-08-09
  • DUMMY DATABASE Tables edit
    Tables edit //
    2025-08-09
  • DUMMY DATABASE Events sequence
    Events sequence //
    2025-08-09
  • DUMMY DATABASE SQL editor
    SQL editor //
    2025-08-09
  • DUMMY DATABASE ERD
    ERD //
    2025-08-09

Dummy Database is built to solve a simple, yet annoying problem โ€” generating realistic test datasets quickly, without writing scripts or juggling Excel files.

Itโ€™s designed for: - Developers needing dummy databases for prototyping & testing. - Analysts and BI specialists preparing demo dashboards. - QA engineers creating data scenarios for testing. - SQL learners who want practice datasets on demand.

What makes it special? - Create from simple tables to full relational databases with PK/FK. - 35+ data types including Numbers, Dates, Names, Booleans, etc. - Unique Event Sequences โ€” simulate user actions and workflows. - Advanced data controls โ€” outliers, nulls, repeats, distributions. - ERD visualization to map relationships. - Built-in PostgreSQL editor to query generated data. - Export as CSV, XLSX, SQL DDL, or full ZIP. - Free up to 10,000 records per table for registered users โ€” no paywalls or limits.

Exercism

Website
exercism.org
Pricing URL
-
$ Details
Platforms
-
Release Date
-
Edit details

DUMMY DATABASE

Website
dummydatabase.com
Pricing URL
Official DUMMY DATABASE Pricing
$ Details
free
Platforms
Web
Release Date
2024 October
Startup details
Country
Serbia
City
Novi Sad
Founder(s)
Igor Bobritskii
Employees
1 - 9
Edit details

Exercism features and specs

  • Free Access
    Exercism provides free access to a wide range of coding exercises and learning resources, making it accessible to everyone regardless of their financial situation.
  • Mentorship
    Offers personalized mentorship from experienced developers who can provide feedback and guidance on your code submissions.
  • Wide Variety of Languages
    Supports numerous programming languages, which allows users to learn and practice coding in multiple languages.
  • Structured Learning Tracks
    Organizes exercises into structured tracks, guiding learners through progressively challenging problems in a logical order.
  • Community Support
    Has an active community forum where users can discuss problems, share insights, and ask for help.
  • Open Source Contributions
    Encourages contributions to the platform itself, offering an opportunity for users to give back and improve the resources available to others.
  • Focus on Clean Code
    Emphasizes writing clean, well-documented code, which is beneficial for developing best practices.

Possible disadvantages of Exercism

  • Variable Mentorship Quality
    The quality of mentorship can vary, as it depends on the availability and expertise of volunteer mentors.
  • Learning Curve
    There can be a steep learning curve for beginners who may find some exercises too challenging without sufficient initial guidance.
  • Limited Interactivity
    Exercises are primarily text-based without interactive or visual learning aids, which might be less engaging for some users.
  • Dependence on Volunteers
    The platform relies heavily on volunteer mentors, which can lead to delays in getting feedback and may affect the consistency of support.
  • Interface Complexity
    Some users find the interface and workflow somewhat complex and unintuitive, particularly for those new to the platform.
  • No Real-Time Collaboration
    Lacks real-time collaboration features, meaning users cannot code together or get instant feedback.
  • Focus on Individual Learning
    The platform predominantly focuses on individual learning rather than collaborative projects, which can be a downside for those looking to develop team-working skills.

DUMMY DATABASE features and specs

  • Relations Datasets Generation
    Automatically create realistic, interlinked datasets that preserve relational integrity between tables โ€” perfect for simulating multi-table databases for testing, analytics, and demos.
  • Sequence of Events
    Define and generate realistic event chains with time dependencies, probabilities, and conditional paths โ€” ideal for modeling user journeys, workflows, or process mining scenarios.
  • Built-in SQL Editor
    Instantly query, filter, and transform generated datasets without leaving the platform โ€” no need for external tools or database setup.

Analysis of Exercism

Overall verdict

  • Yes, Exercism is considered good for learning and improving programming skills.

Why this product is good

  • Exercism offers free access to a wide variety of exercises in over 50 different programming languages, catering to both beginners and experienced programmers.
  • The platform provides a unique mentorship model where volunteers review submitted solutions, offering personalized feedback and guidance.
  • The exercises are well-structured, facilitating both practice and mastery of language-specific concepts and problem-solving skills.
  • Exercism encourages learning through doing, promoting an active learning environment which can be more effective compared to passive learning styles.
  • The platform allows for self-paced learning, enabling users to progress at their own speed and revisit topics as needed.

Recommended for

  • Beginner programmers seeking practical coding exercises to reinforce their learning.
  • Intermediate and advanced developers looking to hone their skills or learn new programming languages.
  • Individuals who appreciate personalized feedback and mentorship to improve their coding practices.
  • Students and educators searching for supplementary resources to support coursework or syllabus requirements.
  • Professionals aiming to practice coding interview problems and enhance their problem-solving abilities.

Exercism videos

+ Add

Learn with Exercism.io

More videos:

  • Review - JavaScript Exercise | Learn JavaScript with Exercism | #0 Setup
  • Review - exercism.io 01 hello-world

DUMMY DATABASE videos

No DUMMY DATABASE videos yet. You could help us improve this page by suggesting one.

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Category Popularity

0-100% (relative to Exercism and DUMMY DATABASE)

Exercism

DUMMY DATABASE

Online Learning
100 100%
Online Learning
0% 0
Databases
0 0%
Databases
100% 100
Online Education
100 100%
Online Education
0% 0
Synthetic Data
0 0%
Synthetic Data
100% 100

Questions & Answers

As answered by people managing Exercism and DUMMY DATABASE.

What makes your product unique?

DUMMY DATABASE's answer:

A free, all-in-one data generation platform that builds everything from simple tables to full relational databases with advanced controls, unique event sequences, ERD visualization, built-in SQL querying, and multiple export formats โ€” no limits, no paywalls.

Why should a person choose your product over its competitors?

DUMMY DATABASE's answer:

Unlike other data generators, DUMMY DATABASE gives you full relational database creation, unique event simulations, advanced control over every field, built-in SQL querying, and generous free limits โ€” so you can go from idea to test-ready data without restrictions, subscriptions, or hidden fees

How would you describe the primary audience of your product?

DUMMY DATABASE's answer:

  • Developers needing dummy databases for prototyping & testing.
  • Analysts and BI specialists preparing demo dashboards.
  • QA engineers creating data scenarios for testing.
  • SQL learners who want practice datasets on demand.

What's the story behind your product?

DUMMY DATABASE's answer:

Began as a project for myself to be able to have custom datasets for testing purpose I've decided that it could be useful for wider audience and finalized it as a full-stack web project

Which are the primary technologies used for building your product?

DUMMY DATABASE's answer:

Python, Flask, HTML, CSS, Bootstrap, Redis, PostgreSQL, JavaScript

User comments

Share your experience with using Exercism and DUMMY DATABASE. For example, how are they different and which one is better?
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Reviews

These are some of the external sources and on-site user reviews we've used to compare Exercism and DUMMY DATABASE

Exercism Reviews

LeetCode Alternatives: Top platforms for coding practice
What are LeetCode and LeetCode alternatives good for?LeetCode๐Ÿ’กInterested in leveling up your career? Apply to the Formation Fellowship today!ApplyHackerRankCodeSignalAlgoExpertCodewarsGeeksforGeeksEdabitExercismTopCoderShould you use LeetCode for advanced interview prep?Get holistic interview prep with Formation
Source: formation.dev
8 Best LeetCode Alternatives and Similar Platforms
Exercism is the alternative to LeetCode learning platform, with over 4000 activities in up to 52 popular programming languages. It is very different from other comparable programming websites in that it emphasizes solo practice and also mentor-based learning. The greatest part about this software is to have an active developer community that assists novices all around the...
Source: www.regendus.com
The 10 Most Popular Coding Challenge Websites [Updated for 2021]
Exercism is a coding challenge website that offers 3100+ challenges spanning 52 different programming languages. After picking a language that you'd like to master, you tackle the coding challenges right on your machine (Exercism has their own command line interface that you can download from GitHub).
Source: www.freecodecamp.org
Top 25 websites for coding challenge and competition [Updated for 2021]
Best qualities: Exercism starts off with language tracks that allow users to choose their preferred languages. Moreover, there are human mentors who will check your code and help you improve as you progress. This makes the platform perfect for total beginners who want to deepen their understanding of a new programming language.
Source: towardsdatascience.com

DUMMY DATABASE Reviews

We have no reviews of DUMMY DATABASE yet.
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Social recommendations and mentions

Based on our record, Exercism seems to be more popular. It has been mentiond 318 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

Exercism mentions (318)

  • AI made me lazy. I didnโ€™t notice until it was too late.
    Exercism.org structured deliberate practice, no AI required. - Source: dev.to / 3 months ago
  • Free Python Resources
    Providing free coding exercises and mentorship, Exercism helps developers practice and improve their programming skills step by step. Their Python Track offers a series of exercises that guide learners from beginner to more advanced levels. - Source: dev.to / 6 months ago
  • Collaboration Circles for Developers (2026)
    Exercism is a code practice + mentoring platform in 74 languages. Why it can work: although it is not exclusively focused on groups of five, its mentoring and peer review model allows forming mini-circles where participants give each other mutual feedback. Limitation: it is not originally intended as a "venting circle" (My favorite), but more technical-practical. - Source: dev.to / 8 months ago
  • Cracking Blackjack with Go: A Step-by-Step Guide to Your First Move
    Keep practicing, keep coding, and most importantlyโ€”have fun with it! If you enjoyed this exercise, explore more challenges on exercism to continue building your Go skills. As always, you can find the complete code in my GitHub repo: https://github.com/RubenOAlvarado/algorithms. - Source: dev.to / 9 months ago
  • Ask HN: What book should my CS1 students read?
    (concepts/topics) : The New Turing Omnibus, 66 Excursions in Computer Science[1] Code Complete [2] Debugging The 9 Indispensable Rules of Finding Even the Most Elusive Software and Hardware Problems [3] Code: The Hidden Language of Computer Hardware and Software [4] -- backround stories on how 'computer' things came to be -------- [1] : https://www.amazon.com/New-Turing-Omnibus-Sixty-Six-Excursions/dp/0805071660... - Source: Hacker News / about 1 year ago
View more

DUMMY DATABASE mentions (0)

We have not tracked any mentions of DUMMY DATABASE yet. Tracking of DUMMY DATABASE recommendations started around Aug 2025.

What are some alternatives?

When comparing Exercism and DUMMY DATABASE, you can also consider the following products

Codecademy - Learn the technical skills you need for the job you want. As leaders in online education and learning to code, weโ€™ve taught over 45 million people using a tested curriculum and an interactive learning environment.

Mockaroo - A realistic data generator to test your app

Treehouse - Treehouse is an award-winning online platform that teaches people how to code.

DataConstruct - We fake it till you make it!

edX - Best Courses. Top Institutions. Learn anytime, anywhere.

Data Creator - Data generator that can create a table filled with pseudo-random content.

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