A detailed look at basic SQL.js features

SQL.js is a JavaScript library that allows users to create and query relational databases directly in a web browser, using a virtual database file stored in memory, which means changes are not persistent across sessions. It is built on Emscripten and compiles SQLite to WebAssembly, enabling easy import and export of SQLite databases. SQL.js operates entirely on the client side, making it simpler to set up compared to server-side systems like MySQL or PostgreSQL, although it lacks data persistence. Users can execute multiple SQL statements in a single string, run SQL queries, and use prepared statements for efficiency and protection against SQL injection. Installation is straightforward for both browser and Node.js environments, and the library offers functionality to export the database to disk as a .sqlite file. While SQL.js is well-suited for offline-first applications, for projects requiring persistent data storage, traditional relational databases might be more appropriate.