For App Developers and Designers, who want to deliver apps with amazing user experience, Qt provides the QML language, the Qt Quick types, and tools in Qt Creator that make it faster than ever to transform your brilliant idea into a winning App across mobile, embedded, and desktop platforms.
QML is a declarative language for creating flexible and reusable types. The QML runtime powers QML based applications. The runtime includes a QML engine, JavaScript engine, and mechanism to bind to C++ types.
Qt Quick features QML visual types, user input system, animation system, and data visualization through models and delegates.
There is a QML engine which runs QML applications. It includes C++ classes that loads and initializes QML code and a JavaScript engine for running expressions.
The SQL Local Storage provides a JavaScript interface to an SQLite database. To use, import the QtQuick.LocalStorage module into a namespace with the as keyword.
import QtQuick.LocalStorage 2.0 as Sql
The SQL Local Storage page has more information about the interface.