06 - SQL - DML

In this tutorial, we move from defining database structures to managing the actual data inside them using Data Manipulation Language (DML). As a data professional, knowing how to efficiently add, modify, and remove records is essential for building reliable data pipelines and maintaining data integrity.

What you will learn:

INSERT: The syntax for adding single and multiple records.

UPDATE: How to safely modify existing data without causing "production accidents."

DELETE: Removing specific data points using precise filtering.

TRUNCATE: Why this is the preferred method for resetting staging tables in ETL.

The Log Difference: Understanding why TRUNCATE is faster than DELETE.

📂 Project Materials & SQL Scripts:
Download the DML practice scripts here: https://github.com/abdelrahman1alaa/SQL

Let's Connect:

💼 LinkedIn:
https://www.linkedin.com/in/abdelrahman1alaa

🐙 GitHub:
https://github.com/abdelrahman1alaa

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