- History and Basics
- Key Components
- Normalization shapes relations and ensures data integrity
- Primary keys uniquely identify entities
- Foreign keys establish relationships between tables
- SQL manages database structure and data operations
- Advantages and Limitations
- Offers scalability and fast data access
- Provides security features like authentication and encryption
- NoSQL databases offer more flexibility but less reliable consistency
- NewSQL databases combine relational and NoSQL features
- Popular Examples
- MySQL and MariaDB are open-source alternatives
- PostgreSQL known for advanced features and extensibility
- Microsoft SQL Server used in enterprise environments
- Oracle Database preferred for high-performance applications