What are the languages preferrable to create an app that requires database connectivity and how to do that??

Question

I want to create an android app which requires database connectivity to store user data .like i want to create a messenger app,it should have database to login ,to send photos and to chat....what languages are involved in it and how to build it??any help in detail is appreciated....

Answer 1

learn SQL, a server side language to be used in the server (not for the app- codes uploaded at server ), ajax (it's not a language but a technology). and a bit of understanding of any pne out of XML, JSON, string-data would help, also learn the language to be used to build the app.