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*Top SQL Interview Questions with Answers: Part-4* 🧠 *31. What are constraints in SQL?* Constraints are rules applied to columns to enforce data integrity: - `PRIMARY KEY` – Uniquely identifies each ...

This repository follows the structure of the study plan exactly. Each main folder represents a topic or category in SQL. Within each folder, you'll find separate folders for each problem. Each problem ...

SQL Challenge: Find the Median Age of Employees Here’s an interesting SQL problem for all data enthusiasts! 👇 We often solve problems using aggregate functions like SUM () or AVG ().

AI agent exploited Salesforce sites; 263 objects, 55 Apex methods exposed at one portal, leading to PII and file leaks.

AI search has outgrown simple RAG. Learn how today’s hidden AI retrieval systems decide whether your content gets surfaced or filtered out. Two and a half years ago, I wrote an article for Search ...