Which database is included with Qt on all platforms?

How can you determine what databases are supported by your version of Qt?

What is QSqlDatabase is an abstraction for, a file, connection, user, or table?

What is the difference between a DDL query and a regular query?

Why are prepared queries preferred over regular queries?

What would be a better name for the class, QSqlDatabase?

If the database driver's hasFeature(QSqlDriver::PreparedQueries) reports false, can you use prepared queries?

Can a non-DDL query modify table rows?