What Are Primary Keys in SQL? Explained with Examples
9:54
YouTubeSQL Handbook
What Are Primary Keys in SQL? Explained with Examples
In this video, I explain what primary keys are in SQL databases, why they are important, and how to create them. You will learn: • What a primary key is and how it ensures data integrity • Why primary keys prevent duplicates and accidental updates or deletions • How primary keys help build relationships between tables • The rules of ...
2 weeks ago
Primary key ...
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