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<?xml version="1.0" encoding="utf-8"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xml:lang="en" lang="en" xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html;charset=utf-8" /> <meta http-equiv="Content-Style-Type" content="text/css" /> <!-- MOTW-DISABLED saved from url=(0014)about:internet --> <title>Defining Index Attributes on Windows</title> <link rel="StyleSheet" href="css/dbasfox.css" type="text/css" media="all" /> <link rel="StyleSheet" href="css/webworks.css" type="text/css" media="all" /> <script type="text/javascript" language="JavaScript1.2" src="wwhdata/common/context.js"></script> <script type="text/javascript" language="JavaScript1.2" src="wwhdata/common/towwhdir.js"></script> <script type="text/javascript" language="JavaScript1.2" src="wwhdata/common/wwhpagef.js"></script> <script type="text/javascript" language="JavaScript1.2"> <!-- var WebWorksRootPath = ""; // --> </script> <script type="text/javascript" language="JavaScript1.2"> <!-- // Set reference to top level help frame // var WWHFrame = WWHGetWWHFrame("", true); // --> </script> <script type="text/javascript" language="JavaScript1.2" src="scripts/expand.js"></script> </head> <body class="" style="background-color: #FFFFEE;" onload="WWHUpdate();" onunload="WWHUnload();" onkeydown="WWHHandleKeyDown((document.all||document.getElementById||document.layers)?event:null);" onkeypress="WWHHandleKeyPress((document.all||document.getElementById||document.layers)?event:null);" onkeyup="WWHHandleKeyUp((document.all||document.getElementById||document.layers)?event:null);"> <br /> <div class="WebWorks_Breadcrumbs" style="text-align: left;"> <a class="WebWorks_Breadcrumb_Link" href="dbasfox.21.01.html#119154">16 The dBASE Driver</a> : Defining Index Attributes on Windows</div> <hr align="left" /> <blockquote> <div class="head_1"><a name="119154">Defining Index Attributes on Windows</a></div> <div class="Body"><a name="119159">The Define tab of the ODBC dBASE Driver Setup dialog box allows you to define the </a>attributes of index files. With the exception of Clipper, the family of databases that includes dBASE and FoxPro uses a multiple index file associated with a particular table (database file). This index file has a .MDX or .CDX extension and is automatically maintained by the driver. Tags within this index can be marked as unique.</div> <div class="Body"><a name="119160">Clipper uses single index files that are not automatically associated with a particular table. </a>You can choose to have the driver maintain an index and choose whether or not the index is unique.</div> <div class="Body" style="color: #000000; font-style: normal; font-variant: normal; font-weight: bold; text-transform: none; vertical-align: baseline;"><span class="Action_bold"><a name="119161">To define index file attributes:</a></span></div> <div class="list_procedure_first_outer" style="margin-left: 0pt;"> <table border="0" cellspacing="0" cellpadding="0" summary=""> <tr style="vertical-align: baseline;"> <td> <div class="list_procedure_first_inner" style="width: 18pt; white-space: nowrap;"> <span class="Numbers">1 </span> </div> </td> <td width="100%"> <div class="list_procedure_first_inner"><a name="119162">Display the ODBC dBASE Driver Setup dialog box.</a></div> </td> </tr> </table> </div> <div class="list_procedure_outer" style="margin-left: 0pt;"> <table border="0" cellspacing="0" cellpadding="0" summary=""> <tr style="vertical-align: baseline;"> <td> <div class="list_procedure_inner" style="width: 18pt; white-space: nowrap;"> <span class="Numbers">2 </span> </div> </td> <td width="100%"> <div class="list_procedure_inner"><a name="119163">Click the </a><span class="Action_bold">Define</span> tab.</div> </td> </tr> </table> </div> <div class="picture"><a name="155294"><img class="procedure" src="images/dbfdef.gif" width="430" height="348" style="display: block; float: none; left: 0.0; top: 0.0;" alt="The Define tab of the ODBC dBASE Driver Setup dialog box" /></a></div> <div class="Body_Indent"><a name="119172">On this tab, provide the following information; then, click </a><span class="Action_bold">Apply</span>.</div> <div class="Body_Indent"><span class="Action_bold"><a name="119173">Table</a></span>: Type or select the name of the table that contains the database information.</div> <div class="Body_Indent"><span class="Action_bold"><a name="119174">Multiple Index File</a></span>: This field displays the name of any multiple index file (with a .CDX extension or .MDX extension) associated with the table you selected. This index file cannot be marked as unique, but tags within it can be.</div> <div class="Body_Indent"><span class="Action_bold"><a name="119175">Unique Tags</a></span>: This field displays tags associated with the multiple index file. To mark tags as unique, click each one; each one remains selected until you click it again. </div> <div class="Body_Indent"><span class="Action_bold"><a name="119176">Single Index Files</a></span>: The Single Index Files group is active only if you have selected a Clipper table.</div> <div class="Body_Indent"><a name="119177">Select the file from the drop-down list to define the attributes of a single index file.</a></div> <div class="Body_Indent"><span class="Action_bold"><a name="119178">Maintain Index</a></span>: Select this check box to associate the specified single index file with the selected table.</div> <div class="Body_Indent"><span class="Action_bold"><a name="119179">Keep Unique</a></span>: Select this check box to specify that the single index file is unique.</div> <div class="list_procedure_outer" style="margin-left: 0pt;"> <table border="0" cellspacing="0" cellpadding="0" summary=""> <tr style="vertical-align: baseline;"> <td> <div class="list_procedure_inner" style="width: 18pt; white-space: nowrap;"> <span class="Numbers">3 </span> </div> </td> <td width="100%"> <div class="list_procedure_inner"><a name="119180">Click </a><span class="Action_bold">OK</span> or <span class="Action_bold">Cancel</span>. If you click <span class="Action_bold">OK</span>, the values you have specified become the defaults when you connect to the data source. You can change these defaults by using this procedure to reconfigure your data source. You can override these defaults by connecting to the data source using a connection string with alternate values.</div> </td> </tr> </table> </div> <script type="text/javascript" language="JavaScript1.2"> <!-- // Clear related topics // WWHClearRelatedTopics(); document.writeln(WWHRelatedTopicsInlineHTML()); // --> </script> </blockquote> <script type="text/javascript" language="JavaScript1.2"> <!-- document.write(WWHRelatedTopicsDivTag() + WWHPopupDivTag() + WWHALinksDivTag()); // --> </script> </body> </html>
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