SQL From Scratch – Chapter 2 | Database Structure, Schemas, Tables & SQL Data Types Explained скачать в хорошем качестве

SQL From Scratch – Chapter 2 | Database Structure, Schemas, Tables & SQL Data Types Explained

In this live SQL session, we cover Chapter 2 of the Complete SQL Learning Roadmap. This is the chapter where most people quietly ruin their databases without realizing it. Wrong table structure and bad data types don’t fail immediately — they create slow queries, broken joins, and confusing bugs later. This session fixes that before it becomes permanent damage. What you’ll learn in this live class: Database → Schema → Table hierarchy (no confusion) Why schemas exist and when they actually matter Tables: rows vs columns (structure vs data) Why SQL data types exist (not just syntax) Numeric data types (INT, BIGINT, DECIMAL, FLOAT) Character data types (CHAR, VARCHAR, TEXT) Date and time data types (DATE, TIME, TIMESTAMP) Boolean values and correct usage The real meaning of NULL and three-valued logic Common design mistakes that silently break databases This is not about writing queries yet. This is about designing data so SQL can work correctly and efficiently later. Who this session is for: SQL beginners who want a strong foundation Students preparing for placements or interviews Developers who struggle with joins and data issues Anyone who wants a structured, chapter-wise SQL course What’s next: In Chapter 3, we move into SELECT and basic data retrieval, where good structure finally starts paying off. 📌 This is Chapter 2 of a complete SQL series. Attend live, ask questions, and learn how databases actually organize data. ⏰ Live Interaction Ask your doubts live in the chat. Questions will be answered in real time. 🔗 Connect With Me 📺 YouTube:   / @codewithmahatheer   📸 Instagram:  / codewith_mahatheer   💼 LinkedIn:   / mahatheersyed   (Replace with your actual links) 🏷️ Tags sql, sql tutorial, sql live, learn sql, sql for beginners, sql full course, database structure, sql data types, sql schema, sql tables, sql null, mysql tutorial, postgresql tutorial, database design, sql interview questions, backend developer sql, data analyst sql, placement preparation sql 👍 If this live helps you: Like 👍 Share 🔁 Subscribe 🔔 So more practical, no-nonsense SQL sessions can be created.