SQLite is recommended to be used because of following advantages :
* SQLite supports almost all Operating Systems.
* It is free of cost and flexible.
* It is very compact less than 400KiB.
* It requires no setup or administration as it comes with zero-configuration.
* No separate server processor system is required to operate.
* An SQLite database can be stored in a single cross-platform disk file.
* It is self-contained that means no external dependencies.
* It provides easy access to API as it is written in ANSI-C.
