If you are writing raw SQL queries, your code might look identical whether you use SQLite or PostgreSQL. However, under the hood, they operate in completely opposite ways. SQLite is a serverless database, meaning the entire database is just a single file sitting directly on your disk with zero setup required. PostgreSQL, on the other hand, is a full client-server database that runs as a dedicated background process, requiring network connections to read and write data. Because of this differe...