Check out example codes for "sqlite vs mysql". It will help you in understanding the concepts better.

Code Example 1

SQLite is a public domain, open-source project.It is what is called 
an “embedded” database which means the DB engine runs as part of your app.
MySQL is also open-source but is owned by Oracle. MySQL is a database server
so you have to install it somewhere and then connect to it from your app.

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