Computer Science

This document provides detailed and structured notes on SQL Window Functions, focusing on advanced data analysis and query techniques. What you will learn: Introduction to window functions OVER, PARTITION BY, ORDER BY clauses Ranking functions and analytical functions Performance considerations

This document provides detailed and structured notes on SQL Join Optimization, focusing on improving query performance and handling large datasets efficiently. What you will learn: Introduction to join optimization Query optimization techniques Indexing and execution plans EXISTS vs IN comparison

This document provides detailed and structured notes on SQL Denormalization, focusing on performance optimization and real-world database design. What you will learn: Introduction to SQL Denormalization Difference between normalization and denormalization Techniques used in denormalization Advantages and disadvantages Performance impact and use cases

This document provides complete and detailed notes on SQL Transactions, including ACID properties, commands, and real-world applications. What you will learn: Introduction to SQL Transactions ACID properties (Atomicity, Consistency, Isolation, Durability) Transaction control commands (COMMIT, ROLLBACK, SAVEPOINT) Transaction states and execution flow Real-world applications

This document provides complete and detailed notes on SQL Triggers, including types, creation, execution flow, and real-world applications. What you will learn: Introduction to SQL Triggers Types of triggers (BEFORE, AFTER, INSTEAD OF) Creating and executing triggers Advantages and disadvantages Real-world use cases

This document provides complete and detailed notes on SQL Functions, covering types, creation, and real-world applications. What you will learn: Introduction to SQL Functions Types of functions (Scalar, Aggregate, UDF) Creating and using functions Advantages and disadvantages Comparison with stored procedures Real-world applications

This document provides complete and detailed notes on SQL Stored Procedures, covering creation, execution, parameters, and real-world applications. What you will learn: Introduction to Stored Procedures Creating and executing procedures Parameters and dynamic queries Advantages and disadvantages Comparison with functions Real-world use cases

This document provides complete and detailed notes on SQL Views, including types, creation, usage, and real-world applications. What you will learn: Introduction to SQL Views Types of views (Simple and Complex) Creating and updating views Advantages and disadvantages Security using views Real-world applications

This document provides detailed and easy-to-understand notes on SQL Indexes, covering types, working, and performance optimization techniques. What you will learn: Introduction to SQL Indexes Types of indexes (Clustered, Non-Clustered, Unique, Composite) How indexing improves performance Real-world applications Advantages and disadvantages Common mistakes and best practices

This document provides complete and easy-to-understand notes on SQL Subqueries, covering nested queries, correlated subqueries, and real-world applications. What you will learn: Introduction to SQL Subqueries Types of subqueries (single-row, multi-row, correlated) Subqueries in WHERE and SELECT clauses Correlated subqueries explained with examples Difference between subqueries and joins Real-world use cases