SQL for Beginners: Learn Database Design, Queries, and SQL Functions

Course Description

This course is your complete guide to mastering SQL (Structured Query Language), designed for absolute beginners with no prior database experience. You'll start with the very basics, learning what databases are and how they work. From there, you will dive into a hands-on journey, setting up your own database environment and learning how to create tables, define data relationships, and perform all the essential CRUD (Create, Read, Update, Delete) operations. The curriculum covers everything from writing simple queries to filtering with clauses, performing calculations with aggregate functions, and combining data from multiple tables using JOINs. By the end, you'll have a solid foundation to confidently interact with relational databases.

Who is this course for

This course is designed for anyone who wants to learn how to work with data, regardless of their technical background. It is a perfect starting point for:

• Aspiring Data Analysts & Scientists: Who need SQL as a fundamental skill for data extraction and analysis.

• Business Analysts & Product Managers: Who want to answer business questions by querying company data directly.

• Backend Developers: Who need to interact with databases to build applications.

• QA Engineers & Testers: Who need to validate data in databases as part of their testing process.

• Students and career-changers looking to add a high-demand technical skill to their resume.

Course Objectives

Upon successful completion of this course, you will be able to:

• Understand Database Fundamentals: Explain the concepts of relational databases, DBMS, and the role of SQL.

• Perform CRUD Operations: Write SQL queries to INSERT, SELECT, UPDATE, and DELETE data from a database.

• Design and Manage Tables: Create, modify, and delete databases and tables, and enforce data integrity using constraints (PRIMARY KEY, FOREIGN KEY, etc.).

• Filter and Sort Data: Use clauses like WHERE, GROUP BY, and ORDER BY to refine and organize your query results.

• Combine Data with JOINs: Write queries that combine rows from two or more tables based on a related column.

• Use SQL Functions: Apply aggregate functions like COUNT(), SUM(), and AVG() to perform calculations on your data.

• Simplify Complex Queries: Create and manage Views to provide a simplified look at your data.

Prerequisites

There are no prerequisites for this course other than basic computer literacy. No prior programming or database experience is required.

Course outline

Section 1. Introduction to Databases

1. What is a Database?

2. Types of Databases

3. What is a DBMS?

4. Relational and Non-Relational Databases

Section 2. Introduction to SQL

1. What is SQL?

2. Setting up a Database Environment: MySQL, PostgreSQL, and SQLite

3. SQL Data Types

4. SQL Operators

5. SQL Commands

Section 3. Creating and Managing Databases and Tables

1. Database Commands: CREATE, DROP, RENAME, USE ,

2. Table Commands: CREATE TABLE, DROP TABLE, RENAME TABLE

3. Data Handling: DELETE vs. TRUNCATE, TEMP TABLE, COPY TABLE

4. Modifying Structure: ALTER TABLE

Section 4. Basic SQL Syntax and Queries

1. The SELECT Statement

2. Clauses for Selecting Subsets: TOP, FIRST, LAST, RANDOM

3. Working with Conditions: IN, Multiple Columns, Dates

Section 5. Modifying Data

1. INSERT INTO (Single and Multiple Rows)

2. The UPDATE Statement

3. The DELETE Statement

4. Deleting Duplicate Rows

Section 6. SQL Clauses for Filtering and Organizing

1. WHERE Clause

2. WITH Clause (Common Table Expressions)

3. GROUP BY Clause

4. HAVING Clause

5. ORDER BY Clause

6. LIMIT Clause

Section 7. Working with Functions and Aggregates

1. SQL Aggregate Functions Overview

2. COUNT(), SUM(), MIN(), MAX(), AVG()

Section 8. SQL Operators

1. Logical Operators: AND, OR, NOT

2. Comparison Operators: LIKE, IN, NOT EQUAL, IS NULL, BETWEEN

3. Set Operators: UNION, UNION ALL, EXCEPT

Section 9. SQL Constraints for Data Integrity

1. NOT NULL, UNIQUE

2. PRIMARY KEY, FOREIGN KEY

3. Composite Keys and Alternate Keys

4. CHECK, DEFAULT

Section 10. Joining Tables

1. Introduction to SQL JOIN

2. Outer Joins: LEFT, RIGHT, FULL OUTER

3. Other Joins: CROSS JOIN, SELF JOIN

4. Advanced Joins: UPDATE with JOIN, DELETE with JOIN, Recursive JOIN

Section 11. Creating and Using Views

1. CREATE VIEW

2. UPDATE VIEW

3. DELETE VIEW

4. RENAME VIEW

Testimonials