SQL Complete Notes | Interview Questions

Master SQL with these comprehensive, beginner-friendly notes designed for university students, internships, placements, and technical interviews. This study guide covers SQL from basic to advanced concepts with clear explanations, practical examples, syntax, diagrams, memory tricks, and revision notes.

Topics Included:

Introduction to Databases, DBMS & RDBMS

SQL Basics & Data Types

DDL, DML, DQL, DCL & TCL

Constraints & Keys

WHERE, LIKE, IN, BETWEEN

Aggregate Functions

GROUP BY, HAVING, ORDER BY

SQL Joins (INNER, LEFT, RIGHT, FULL, SELF, CROSS)

Subqueries & Set Operators

Views & Indexes

Transactions & ACID Properties

SQL Functions

CASE Statements

CTEs & Window Functions

ER Model & Database Design

Normalization (1NF, 2NF, 3NF, BCNF)

SQL Cheat Sheet

Interview Questions

Practice Queries & Revision Notes

These notes are ideal for B.Tech, BCA, MCA, Computer Science, Information Technology, Data Analytics, and Software Engineering students, as well as anyone learning SQL for career development.