How to create an app..??

Question

as i m jst a school girl..i dont knw anything about these languages but still i m interested and i need your help

Answer 1

It is impossible to create an app with SQL.
However, SQL is useful to manage Data Base.

Answer 2

1- if you want to create a mobile application u will need to study :-
-Java
-SQL
-XML
-Learn how to work on android studio
2- If you want to create a desktop application u need to stud :-
-C# or C++ or Java or Python
-SQL
-XML
3- If you want to make a website u need to learn :-
-HTML
-CSS
-JavaScript
-Jquery
-SQL
-ASP or PHP (i recommend ASP in my opinion it is better)

Answer 3

An app is a collection of programs that provide some kind of task that involves data input..processing and relay of info.

So an app has a user interface or an API, then a database then finally section called backend that relays the data from the database to and from the user interface.

There are three main kinds if apps. Mobile app, Desktop App and Web App.
For mobile apps you will need
Android
1. Java
2. Sqlite
3. xml

IOs
1. Swift
..

There is also cross platform mobile apps in HTML5 css and js

Desktop apps
You will need
1 C,
2. C++
3. Java.
4. C# will only work on windows.

Web apps you will need

User interface
HTML and CSS or SCSS

Database
SQL
postgres, mysql etc
NoSQl
monngodb, among others

Backend:
Ruby on raiks,
java,
JavaScript,
python etc

The choice is yours.