Any opinions regarding databases and mobile phone coding?

Question

Is it possible to create and manipulate data using SQL and php tools? If so, is this possible offline? What tools do we recommend as such?

Answer 1

It is possible. Use MySQL for pc and/or use SQL mini for Android.(NOTE, offcourse A mobile cannot handle large databases)

Answer 2

I understand there are no offline compilers for smartphones. Are there any alternatives for this?