Android : Use mySQL as server in local computer

I m developing an android application. In the application, I will need to connect a database (select and sometimes insert data). I dont have a server and I will need to create my own database. How do you suggest me to achieve this? I was thinking to install mySQL to my Mac computer and create the database. If I do it, will there be a way to connect this database via a web service in my application?

In fact, I m confused from every aspects. What is the best way to connect a database in android, can I use my computer as a server, does it necessary to use a webservice in order to connect database, if so how should I create a web service, bla bla bla.

Please inform me or give me some suggestions. Thank you to all for everything.