What are the differences between SQLite and traditional databases like MySQL and PostgreSQL?

Main differences between SQLite and traditional databases like MySQL, PostgreSQL:

1. Architecture Differences

   • SQLite: Embedded database, integrated directly into the application, no separate server process
   • MySQL/PostgreSQL: Client/server architecture, requires a separate database server

2. Concurrency Handling

   • SQLite: Supports multiple readers and single writer, entire database locked during writes
   • MySQL/PostgreSQL: Supports high concurrent read/write, provides multi-level locking mechanisms like row-level locks, table-level locks

3. Data Storage

   • SQLite: Single file stores the entire database
   • MySQL/PostgreSQL: Uses multiple files to store data, indexes, logs, etc.

4. Use Cases

   • SQLite: Mobile applications, desktop applications, embedded systems, small websites, prototype development
   • MySQL/PostgreSQL: Large enterprise applications, high-concurrency websites, systems requiring complex transaction processing

5. Performance Characteristics

   • SQLite: Low latency, fast startup, suitable for small data volumes
   • MySQL/PostgreSQL: Suitable for large data volumes, complex queries, high-concurrency scenarios

6. Feature Support

   • SQLite: Relatively simplified features, no support for stored procedures, triggers, etc. (some versions have limited support)
   • MySQL/PostgreSQL: Supports complete database features like stored procedures, triggers, views, complex indexes

7. Deployment Complexity

   • SQLite: Zero configuration, no need to install database server
   • MySQL/PostgreSQL: Requires installation, configuration, and maintenance of database server