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<h1 id="title-heading" class="pagetitle"> <span id="title-text">Definition Versioning</span> </h1>
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<p>Often, you may have a master configuration, which you install to one or more Rhapsody installations; for example, if you are a vendor who uses Rhapsody in an OEM or reseller situation, you may have a master configuration that you install to a number of sites. Over time, the definitions may change as alterations are incorporated into the master configuration, and these may be migrated to different installations at different times.</p>
<p>The <strong>File Manager</strong> displays the current version of S3D and MDF files in the <strong>Server Version</strong> field.</p>
<h2 id="DefinitionVersioning-OverwritingaDefinition">Overwriting a Definition</h2>
<p>When adding or updating a definition using the File Manager, Rhapsody checks to see if a definition with the same name exists on the server, and if so, the server version. If an existing definition is found, the <strong>Confirm Definition Overwrite</strong> dialog is displayed.</p>
<p>Refer to <a href="Loading-a-Configuration_133161525.html">Overwriting Definitions</a> and <a href="Loading-a-Configuration_133161525.html">Overwriting Lookup Tables</a> for details.</p>
<h2 id="DefinitionVersioning-DefinitionHistory">Definition History</h2>
<p>You can browse the version history of a definition file and roll back the current version of the file to a previous one through the <strong>Definition History</strong> dialog for a definition file. Refer to <a href="Configuration-History_133161476.html#ConfigurationHistory-DefinitionHistory">Definition History</a> for details.</p>
<p>To launch the <strong>Definition History</strong> dialog for a definition file:</p>
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<li><p>Select the appropriate definition file and select the <strong>Definition History</strong> button.</p></li>
<li>Right-click on the appropriate definition file and select the <strong>Definition History</strong> menu item.</li>
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