source: trunk/doc/src/porting/qt4-sql.qdoc@ 1061

Last change on this file since 1061 was 846, checked in by Dmitry A. Kuminov, 15 years ago

trunk: Merged in qt 4.7.2 sources from branches/vendor/nokia/qt.

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1/****************************************************************************
2**
3** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
4** All rights reserved.
5** Contact: Nokia Corporation ([email protected])
6**
7** This file is part of the documentation of the Qt Toolkit.
8**
9** $QT_BEGIN_LICENSE:FDL$
10** Commercial Usage
11** Licensees holding valid Qt Commercial licenses may use this file in
12** accordance with the Qt Commercial License Agreement provided with the
13** Software or, alternatively, in accordance with the terms contained in a
14** written agreement between you and Nokia.
15**
16** GNU Free Documentation License
17** Alternatively, this file may be used under the terms of the GNU Free
18** Documentation License version 1.3 as published by the Free Software
19** Foundation and appearing in the file included in the packaging of this
20** file.
21**
22** If you have questions regarding the use of this file, please contact
23** Nokia at [email protected].
24** $QT_END_LICENSE$
25**
26****************************************************************************/
27
28/*!
29 \page qt4-sql.html
30 \title The Qt 4 Database GUI Layer
31
32 \contentspage {What's New in Qt 4}{Home}
33 \previouspage Cross-Platform Accessibility Support in Qt 4
34 \nextpage The Network Module in Qt 4
35
36 The GUI layer of the SQL module in Qt 4 has been entirely
37 redesigned to work with \l{qt4-interview.html}{Interview} (Qt's
38 new model/view classes). It consists of three model classes
39 (QSqlQueryModel, QSqlTableModel, and QSqlRelationalTableModel)
40 that can be used with Qt's view classes, notably QTableView.
41
42 \section1 General Overview
43
44 The Qt 4 SQL classes are divided into three layers:
45
46 \list
47 \o The database drivers
48 \o The core SQL classes
49 \o The GUI classes
50 \endlist
51
52 The database drivers and the core SQL classes are mostly the same
53 as in Qt 3. The database item models are new with Qt 4; they
54 inherit from QAbstractItemModel and make it easy to present data
55 from a database in a view class such as QListView, QTableView,
56 and QTreeView.
57