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diff --git a/examples/quickcontrols2/chattutorial/chapter5-styling/sqlconversationmodel.cpp b/examples/quickcontrols2/chattutorial/chapter5-styling/sqlconversationmodel.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2017 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, you may use this file under the terms of the BSD license
+** as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of The Qt Company Ltd nor the names of its
+**     contributors may be used to endorse or promote products derived
+**     from this software without specific prior written permission.
+**
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "sqlconversationmodel.h"
+
+#include <QDateTime>
+#include <QDebug>
+#include <QSqlError>
+#include <QSqlRecord>
+#include <QSqlQuery>
+
+static const char *conversationsTableName = "Conversations";
+
+static void createTable()
+{
+    if (QSqlDatabase::database().tables().contains(conversationsTableName)) {
+        // The table already exists; we don't need to do anything.
+        return;
+    }
+
+    QSqlQuery query;
+    if (!query.exec(
+        "CREATE TABLE IF NOT EXISTS 'Conversations' ("
+        "'author' TEXT NOT NULL,"
+        "'recipient' TEXT NOT NULL,"
+        "'timestamp' TEXT NOT NULL,"
+        "'message' TEXT NOT NULL,"
+        "FOREIGN KEY('author') REFERENCES Contacts ( name ),"
+        "FOREIGN KEY('recipient') REFERENCES Contacts ( name )"
+        ")")) {
+        qFatal("Failed to query database: %s", qPrintable(query.lastError().text()));
+    }
+
+    query.exec("INSERT INTO Conversations VALUES('Me', 'Ernest Hemingway', '2016-01-07T14:36:06', 'Hello!')");
+    query.exec("INSERT INTO Conversations VALUES('Ernest Hemingway', 'Me', '2016-01-07T14:36:16', 'Good afternoon.')");
+    query.exec("INSERT INTO Conversations VALUES('Me', 'Albert Einstein', '2016-01-01T11:24:53', 'Hi!')");
+    query.exec("INSERT INTO Conversations VALUES('Albert Einstein', 'Me', '2016-01-07T14:36:16', 'Good morning.')");
+    query.exec("INSERT INTO Conversations VALUES('Hans Gude', 'Me', '2015-11-20T06:30:02', 'God morgen. Har du fått mitt maleri?')");
+    query.exec("INSERT INTO Conversations VALUES('Me', 'Hans Gude', '2015-11-20T08:21:03', 'God morgen, Hans. Ja, det er veldig fint. Tusen takk! "
+               "Hvor mange timer har du brukt på den?')");
+}
+
+SqlConversationModel::SqlConversationModel(QObject *parent) :
+    QSqlTableModel(parent)
+{
+    createTable();
+    setTable(conversationsTableName);
+    setSort(2, Qt::DescendingOrder);
+    // Ensures that the model is sorted correctly after submitting a new row.
+    setEditStrategy(QSqlTableModel::OnManualSubmit);
+}
+
+QString SqlConversationModel::recipient() const
+{
+    return m_recipient;
+}
+
+void SqlConversationModel::setRecipient(const QString &recipient)
+{
+    if (recipient == m_recipient)
+        return;
+
+    m_recipient = recipient;
+
+    const QString filterString = QString::fromLatin1(
+        "(recipient = '%1' AND author = 'Me') OR (recipient = 'Me' AND author='%1')").arg(m_recipient);
+    setFilter(filterString);
+    select();
+
+    emit recipientChanged();
+}
+
+QVariant SqlConversationModel::data(const QModelIndex &index, int role) const
+{
+    if (role < Qt::UserRole)
+        return QSqlTableModel::data(index, role);
+
+    const QSqlRecord sqlRecord = record(index.row());
+    return sqlRecord.value(role - Qt::UserRole);
+}
+
+QHash<int, QByteArray> SqlConversationModel::roleNames() const
+{
+    QHash<int, QByteArray> names;
+    names[Qt::UserRole] = "author";
+    names[Qt::UserRole + 1] = "recipient";
+    names[Qt::UserRole + 2] = "timestamp";
+    names[Qt::UserRole + 3] = "message";
+    return names;
+}
+
+void SqlConversationModel::sendMessage(const QString &recipient, const QString &message)
+{
+    const QString timestamp = QDateTime::currentDateTime().toString(Qt::ISODate);
+
+    QSqlRecord newRecord = record();
+    newRecord.setValue("author", "Me");
+    newRecord.setValue("recipient", recipient);
+    newRecord.setValue("timestamp", timestamp);
+    newRecord.setValue("message", message);
+    if (!insertRecord(rowCount(), newRecord)) {
+        qWarning() << "Failed to send message:" << lastError().text();
+        return;
+    }
+
+    submitAll();
+}