Complete SQL Handwritten notes.

SQL is a book that teaches you how to use the Structured Query Language (SQL). SQL is a programming language for managing data held in a relational database management system (RDBMS). It is a powerful tool that can be used to perform a wide variety of tasks, including:

• Creating, updating, and deleting databases and tables
• Inserting, updating, and deleting data in tables
• Querying data from tables
• Creating and managing relationships between tables
• Managing user permissions and security

The SQL books typically cover the following topics:

• Introduction to SQL
• Data types and operators
• SELECT statements
• WHERE clauses
• ORDER BY clauses
• GROUP BY clauses
• JOIN statements
• Subqueries
• Views
• Transactions
• User permissions and security