Database Management Systems
& Complete SQL Masterclass
Comprehensive course notes, mathematical relational foundations, full SQL query guides, hands-on labs, 50+ practice questions with step-by-step solutions, and all original lecture slides.
Structured Course Curriculum
From formal relational algebra to modern analytical window functions and ACID guarantees.
Relational Foundations
3-Schema architecture, Relational Model, Keys (PK, FK, Candidate), and complete Relational Algebra (σ, π, joins, division).
Core SQL Querying
DDL constraints, single-table SELECT, JOIN family (inner, outer, anti, self), and aggregation with GROUP BY & HAVING.
Advanced Subqueries & Analytics
CTEs (`WITH`), NOT IN NULL traps, correlated subqueries, EXISTS, 3-valued logic, and window functions (`OVER`, `RANK`, `LAG/LEAD`).
DML, Security & Transactions
Safe DML updates, triggers, Python DB-API, SQL injection prevention, updatable views, ACID, and isolation levels.
LeetCode SQL & DBMS Interview Qs
Complete LeetCode SQL 50 solutions (Easy, Medium, Hard), Normalization, B+ Trees, Concurrency Control, and System Design problems.
Cloudflare Pages Hosting
Production deployment guide for Cloudflare Pages with zero-cost edge distribution, instant caching, and automated builds.
Need the original slide decks or lab handouts?
Every PDF from Lecture 1 through Lecture 12 and Labs 1 & 2 is attached directly in the repository and available for direct download.