SQL & Database Management

About This Course

Behind every application, every website, and every business system is a database. The ability to design, query, and manage databases is not optional in IT — it is a core requirement for developers, data analysts, backend engineers, and business intelligence professionals alike.
This 4-week course is designed for all CS, IT, and BCA students regardless of prior experience. You will start from the very basics of how databases work and progress to writing complex SQL queries, designing relational schemas, and understanding NoSQL with MongoDB.
You will work with MySQL and PostgreSQL — the two most widely used relational databases in industry — and get an introduction to MongoDB for modern application development. Every concept is taught with real datasets and practical exercises, not just theory.
SQL is one of those rare skills that immediately makes you more valuable in any IT role — whether you go into web development, data analytics, machine learning, or systems engineering. This course gives you that foundation quickly and effectively.

Curriculum Highlights

Week 1 — Database Fundamentals & Basic SQL
What is a database and why it matters; relational vs non-relational databases; installing MySQL and PostgreSQL; CREATE, INSERT, SELECT, UPDATE, DELETE; filtering with WHERE clause; sorting with ORDER BY
Week 2 — Intermediate SQL
Aggregate functions: COUNT, SUM, AVG, MIN, MAX; GROUP BY and HAVING; SQL JOINs: INNER, LEFT, RIGHT, FULL OUTER; subqueries and nested SELECT statements; working with NULL values
Week 3 — Database Design & Advanced SQL
Entity-Relationship (ER) diagrams; primary keys, foreign keys, and constraints; database normalization: 1NF, 2NF, 3NF; indexes and query optimization basics; views and stored procedures introduction
Week 4 — PostgreSQL, MongoDB & Capstone
PostgreSQL-specific features; introduction to NoSQL and MongoDB; CRUD operations in MongoDB; when to use SQL vs NoSQL; capstone project: design and query a complete database for a real-world system

What You'll Achieve

Write SQL queries confidently from basic SELECT to complex JOINs
Design normalized relational database schemas
Work with MySQL and PostgreSQL in real project environments
Understand and perform basic operations in MongoDB
Optimize queries using indexes and best practices
A complete database project ready for your portfolio
Foundation skill for backend development, data analytics, and ML roles