How is the internal transaction mechanism implemented and displayed in the database user interface?

In the database user interface, the internal transaction mechanism is usually displayed through the following elements:

• Transaction status indicators — for example, labels like "Transaction active", "Transaction committed", or "Rollback performed".
• Transaction control buttons — "Start transaction", "Commit", "Rollback".
• Transaction logs or journal — displaying the sequence of operations involved in the transaction.

Implementation includes tracking the transaction state at the application or database driver level, and the UI updates depending on this state. For example, when a transaction starts, the "Start" button becomes inactive, and "Commit" and "Rollback" buttons appear. Upon commit or rollback, the interface returns to its initial state.

An example in Java using JDBC:

Connection conn = dataSource.getConnection();
try {
    conn.setAutoCommit(false); // Start of transaction
    // Perform operations
    conn.commit(); // Commit transaction
} catch (SQLException e) {
    conn.rollback(); // Rollback on error
} finally {
    conn.setAutoCommit(true);
    conn.close();
}

In the UI, the transaction state can be displayed based on the success of commit/rollback.