WYCF SQL Training Environment

A PostgreSQL-based SQL training environment created for the WYCF( Winners Corpers Fellowship, Kano) Skill Acquisition Program to support beginner learners practicing SQL remotely using controlled database access.

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Project Overview

This project was created as part of a volunteer SQL training initiative designed to provide students with a hands-on SQL learning environment using PostgreSQL. Students connect remotely to a centralized database server through Tailscale and practice SQL queries using shared datasets.

The setup supports both desktop and mobile users through pgAdmin 4 and PG Orbit.

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Objectives

• Teach beginner SQL and data analysis concepts
• Simulate a real client-server database workflow
• Provide secure multi-user database access
• Support remote learning for mobile and desktop users
• Introduce students to practical SQL querying

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Technologies Used

• PostgreSQL
• pgAdmin 4
• PG Orbit
• Tailscale
• Tailscale
• Sqliteonline

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Database Access Configuration

The environment uses role-based access control to manage student access.

Implemented:

• Restricted user roles
• Controlled table permissions
• Connection limits
• Read-only access for students

Example:

CREATE ROLE my_user WITH LOGIN PASSWORD 'your_password';

GRANT data_analyst TO my_user;

GRANT SELECT ON ALL TABLES IN SCHEMA public TO data_analyst;

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Dataset

The training environment includes an Employees dataset used for:

• SELECT statements
• Filtering
• Aggregations
• GROUP BY analysis
• Data exploration

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Remote Learning Architecture

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Topics Covered

• Basic Data Analysis
• Relational Database Concepts
• SQL Fundamentals
• Filtering & Sorting
• Aggregation Functions
• GROUP BY
• Data Cleaning

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Screenshots

Database Role creation

Table creation

• Student database connection
• SQL query execution

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Lessons Learned

Through this project, I gained practical experience in:

• PostgreSQL user management
• Role-based access control
• Multi-user database environments
• Remote database connectivity
• Structuring datasets for SQL education
• Supporting beginner learners with real database systems.

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Setup Instructions

1. Install PostgreSQL
2. Run the SQL files inside the setup folder
3. Execute the dataset creation scripts
4. Connect using pgAdmin 4 or PG Orbit

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Project Timeline

Started: 10 May 2026

Status: Active

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Author

Isaac Uko Inyang

Associate Data Engineer with proficiency in SQL, data cleaning, and database systems.

• LinkedIn: https://www.linkedin.com/in/isaacukoinyang
• GitHub: https://github.com/Isaac-Inyang