SQLite is an open-source software library that implements a self-contained, serverless, zero-configuration, transactional SQL database engine. SQLite is the most widely deployed SQL database engine in the world.
SQLite is a software library that implements a self-contained, serverless, zero-configuration, transactional SQL database engine. SQLite is the most widely deployed SQL database engine in the world. The source code for SQLite is in the public domain.
SQLite is a relational database management system contained in a small (~350 KB) C programming library. In contrast to other database management systems, SQLite is not a separate process that is accessed from the client application, but an integral part of it.
SQLite is ACID-compliant and implements most of the SQL standard, using a dynamically and weakly typed SQL syntax that does not guarantee the domain integrity.
Making an MRE for SQLite questions on StackOverflow
Providing a minimal reproducible example for an SQLite-related question is most usefully and conveniently done by showing a few lines in SQLite syntax (i.e. some create table ... and insert ... which makes a tailored toy database with appropriate structure and sample data). Also consider making a db fiddle and sharing the link (there are multiple free such services out there; see, for example, this and this).
This way, potential answerers can easily recreate the database you used for demonstrating the problem and quickly and efficiently provide solution proposals that are supported by test runs and test output. Showing pictures of database viewers or table representations (even in ASCII art) does not provide the same benefits.
When seeking assistance with an SQL query, structure your query accordingly (see tips for asking a good SQL question).
If you already have created a database for demonstration purposes, consider using the .dump command of the SQLite commandline tool. It will automatically give you the lines for exactly recreating the database.
Getting familiar with the commandline tool also is a good way of avoiding all potential errors in whatever programming language is used to handle the database. With the commandline tool, you can inspect and analyse data and structure directly.
Mobile Apps
SQlite is commonly used to store data on Android, iOS, and Windows Phone apps since it has a simple implementation, easy to adapt, and quite fast.
Design
Unlike client-server database management systems, the SQLite engine has no standalone processes with which the application program communicates. Instead, the SQLite library is linked in and thus becomes an integral part of the application program.
The application program uses SQLite's functionality through simple function calls, which reduce latency in database access: function calls within a single process are more efficient than inter-process communication. SQLite stores the entire database as a single cross-platform file on a host machine.
References
- SQLite Homepage
- SQLite Wikipedia Article
- Official SQLite FAQ
- SQLite Documentation
- SQLite In 5 Minutes Or Less
- SQLite4 Documentation
- SQLite4 LSM User Manual
- SQLite4 LSM API Reference
- The advantages of an LSM vs a B-Tree
