DELETE Query Live Coding | CRUD Operations Tutorial | Complete Implementation | CS619 Lecture #19

📌 Description:
Welcome to CS619 Lecture #20 – your complete guide to mastering the DELETE operation in SQL! ⚠️ In this crucial hands-on tutorial, we complete our CRUD Operations series with a full live coding implementation of the DELETE statement, covering safe data removal techniques and database maintenance best practices.

🔥 What You'll Learn:
✅ Understanding DELETE Syntax – Safe data removal fundamentals
✅ Basic to Advanced DELETE Queries – Single vs multiple record deletion
✅ WHERE Clause Precision – Targeting specific data accurately
✅ DELETE with JOINs – Removing related data across tables
✅ CASCADE Operations – Understanding referential integrity
✅ Soft Delete vs Hard Delete – Best practices for data preservation
✅ Transaction Safety – Using COMMIT and ROLLBACK with DELETE
✅ Performance Considerations – Efficient deletion strategies
✅ Database Cleanup – Maintenance and archiving techniques
✅ Disaster Prevention – Backup strategies before deletion

📖 Timestamps:
00:00 – Introduction to DELETE Operations (The Power & Danger)
05:30 – Basic DELETE Syntax & Simple Examples
12:15 – DELETE with WHERE Clause (Targeted Removal)
19:40 – Deleting Multiple Records
26:55 – DELETE with LIMIT (Safe Batch Deletion)
33:20 – Using Subqueries with DELETE
40:45 – DELETE with JOINs (Related Data Removal)
48:10 – TRUNCATE vs DELETE vs DROP (Critical Differences)
55:35 – Soft Delete Implementation (IsActive flags)
1:03:00 – Transaction Management for Safety
1:10:25 – Database Archiving Strategy
1:17:50 – Real-World Project Scenario
1:25:00 – Q&A & Common Mistakes

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