DATABASE DESIGN AND ALTER Command in SQL | Module 24
https://bit.ly/3Ff5Esb Want to learn how to design databases and modify tables using the ALTER command in SQL?
In this video, we walk you through the essentials of good database design and show you how to use SQL ALTER statements to add, delete, or modify columns like a professional.
Timestamp ⏱️
00:00 – What Are Primary and Foreign Keys in SQL?
02:24 – Create Relationships Between Student and Course Tables
07:27 – Designing a Course Info Table in SQL
10:03 – Setting Data Types and Mandatory Fields in SQL Tables
15:10 – Introduction to SQL ALTER Command
17:25 – Modify Tables Using ALTER: Add or Delete Columns
21:28 – Drop Columns Safely Using SQL ALTER
23:23 – Rename Columns Using ALTER TABLE Command
27:49 – Add New Columns with Positioning in SQL
30:11 – Add Foreign Keys to Existing Tables with ALTER
34:38 – Add Foreign Key Constraints Using ALTER TABLE
36:46 – Maintain Referential Integrity with Foreign Keys
41:43 – Use ON DELETE CASCADE and MODIFY for Data Integrity
49:28 – Difference Between MODIFY and CHANGE COLUMN in SQL
51:59 – Rename Columns with Data Types in ALTER Command
59:02 – Rename Tables and Drop Columns Using ALTER
1:03:45 – Rename SQL Tables and Edit Structures with ALTER
1:06:02 – Final Overview: ALTER Statement for Table Modifications
📌 What You’ll Learn:
1️⃣ Basics of Database Design
📌 How to structure tables with keys, data types, and relationships
📌 Best practices for normalization and efficient schema design
2️⃣ Understanding the ALTER Command in SQL
📌 Syntax and usage for ALTER TABLE
📌 How to add, modify, or drop columns
📌 Renaming columns or changing data types
3️⃣ Real-World Examples
📌 How to update a production table without losing data
📌 Common ALTER command use cases in development
4️⃣ Pro Tips for Schema Management
📌 How to avoid errors and maintain data integrity while altering tables
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📚 Recommended Reads for SQL Learners:
Learning SQL – Alan Beaulieu
Database Design for Mere Mortals – Michael J. Hernandez
SQL Cookbook – Anthony Molinaro
🎬 Must-Watch Tech Documentaries:
Code: Debugging the Gender Gap (2015)
The Internet's Own Boy (2014)
Silicon Valley: The Untold Story (2018)
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