Databases
SQLite
SQLite is a self-contained, serverless SQL database engine that stores an entire database in a single file, embedded directly inside the application that uses it.
What SQLite is used for
SQLite runs inside the application process, with no separate server to install or manage, which makes it the most widely deployed database in the world. It ships in essentially every smartphone, browser, and countless embedded devices. Developers use it for local storage in mobile and desktop apps, on-device caches for offline-first products, test databases, and small web services with modest write concurrency. Despite its size it is a real SQL engine with transactions, indexes, JSON functions, and full-text search, and it is famously reliable.
Why it matters for business software
Not every workload needs a database server. For desktop utilities, field apps that work offline, edge deployments, and internal tools with light traffic, SQLite removes an entire tier of infrastructure, along with its cost and failure modes. Data lives in one file that is easy to back up, copy, and ship. Its main limit is concurrent writes from many processes, so multi-user server applications still belong on PostgreSQL or MySQL; the practical skill is knowing which side of that line a workload falls on.
How Wizcoder AI Labs uses it
We use SQLite for on-device storage in mobile and desktop applications, offline-first field tools, and local development and testing environments within custom software projects. When an app later needs multi-user server storage, we migrate its schema to PostgreSQL.
Related terms
Where we use SQLite
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