<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html> <html lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <!-- topic.qdoc --> <title>Important Concepts In Qt Quick - Data - Models, Views and Data Storage | Qt Quick 5.9</title> <link rel="stylesheet" type="text/css" href="style/offline-simple.css" /> <script type="text/javascript"> document.getElementsByTagName("link").item(0).setAttribute("href", "style/offline.css"); // loading style sheet breaks anchors that were jumped to before // so force jumping to anchor again setTimeout(function() { var anchor = location.hash; // need to jump to different anchor first (e.g. none) location.hash = "#"; setTimeout(function() { location.hash = anchor; }, 0); }, 0); </script> </head> <body> <div class="header" id="qtdocheader"> <div class="main"> <div class="main-rounded"> <div class="navigationbar"> <table><tr> <td >Qt 5.9</td><td ><a href="qtquick-index.html">Qt Quick</a></td><td >Important Concepts In Qt Quick - Data - Models, Views and Data Storage</td></tr></table><table class="buildversion"><tr> <td id="buildversion" width="100%" align="right">Qt 5.9.4 Reference Documentation</td> </tr></table> </div> </div> <div class="content"> <div class="line"> <div class="content mainContent"> <div class="sidebar"> <div class="toc"> <h3><a name="toc">Contents</a></h3> <ul> <li class="level1"><a href="#models-and-views">Models and Views</a></li> <li class="level1"><a href="#data-storage-and-access">Data Storage and Access</a></li> </ul> </div> <div class="sidebar-content" id="sidebar-content"></div></div> <h1 class="title">Important Concepts In Qt Quick - Data - Models, Views and Data Storage</h1> <span class="subtitle"></span> <!-- $$$qtquick-modelviewsdata-topic.html-description --> <div class="descr"> <a name="details"></a> <p>Most applications will have data that needs to be displayed to the user. That data might come from a variety of sources: network sources, local files, and databases are all common sources of data.</p> <a name="models-and-views"></a> <h2 id="models-and-views">Models and Views</h2> <p>It is often advantageous to show similar data in a similar manner, within an application, and this gives rise to the idea of having a model which contains data, and a view which displays the data. The view will display a delegate for every datum in the model.</p> <p>For information about how the Model/View paradigm is implemented in Qt Quick, see the page titled <a href="qtquick-modelviewsdata-modelview.html">Models and Views in Qt Quick</a>.</p> <a name="data-storage-and-access"></a> <h2 id="data-storage-and-access">Data Storage and Access</h2> <p>Databases are commonly used to store information in applications. Qt Quick provides simplified access to relational databases via the <a href="qtquick-localstorage-qmlmodule.html">QtQuick.LocalStorage</a> module.</p> </div> <!-- @@@qtquick-modelviewsdata-topic.html --> </div> </div> </div> </div> </div> <div class="footer"> <p> <acronym title="Copyright">©</acronym> 2017 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners.<br> The documentation provided herein is licensed under the terms of the <a href="http://www.gnu.org/licenses/fdl.html">GNU Free Documentation License version 1.3</a> as published by the Free Software Foundation.<br> Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property of their respective owners. </p> </div> </body> </html>