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Subqueries | How it is Different from Join
Subqueries: What is a subquery, and how is it different from a JOIN operation? Provide an example of a situation where a subquery...
Performance Optimization in SQL
Performance Optimization: Describe some strategies for optimizing SQL queries and improving database performance.
Views in Database
What is a database view, and why might you use it? Can a view be indexed, and if so, why would you do that?