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    <td align="right" class="bar"> <!-- InstanceBeginEditable name="Section Title" -->
      <h1>Omnidex Concepts</h1>
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      <p><a href="#datatypes">Textual Data Types</a></p>
      <p><a href="../../Appendix/Supported%20Datatypes.htm">Supported Data Types</a></p>
      <p class="line">&nbsp;</p>
      <p><a href="External%20Documents.htm">External Documents</a></p>
      <p><a href="Configuration.htm">Configuration</a> </p>
      <p><a href="$RETRIEVE_FILE.htm">$RETRIEVE_FILE</a></p>
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      <h2>Omnidex Text</h2>
      <p>Omnidex provides several powerful text searching capabilities that allow 
        developers to provide users with very fast and flexible text search applications. 
        The Omnidex text search features include keyword, synonym, proximity and 
        misspelling searches, as well as useful thesaurus and form search capabilities 
        and a dictionary for definition retrievals. </p>
      <p>All of these text search capabilities are available on all textual data 
        type fields, including extremely large amounts of data contained in CLOB 
        data type fields as well as text documents external to the database.</p>
      <p>Omnidex also allows &quot;context&quot; retrieval, which returns a snippet 
        of the text, or the context, in which the criteria occurred in the text. 
        Rank and relevancy scores can also be retrieved for statements using the 
        <a href="../../SQL%20Reference/Functions/$CONTAINS.htm">$CONTAINS</a> 
        function.</p>
      <p>Several Omnidex extended functions are available to enable some of the 
        text searching capabilities. These functions can be used in SQL statements 
        from most applications including ODBC, JDBC and OmniAccess API applications. 
        The Omnidex utility, <a href="../../Utilities/ODXSQL/ODXSQL.htm">ODXSQL</a>, 
        also has several commands specifically for text searching, some to facilitate 
        setup and others for testing purposes. </p>
      <p>At this time, Omnidex supports plain text and html text documents external 
        to the database.</p>
      <h5>Summary of Features</h5>
      <p><img src="../../images/arrow.gif" width="10" height="10">Index text in 
        internal Database columns or external files.</p>
      <p><img src="../../images/arrow.gif" width="10" height="10">The ability 
        to perform text searches using any of the following features:</p>
      <ul>
        <li><a href="../Features/Keyword%20Searches.htm">Keyword Searches</a></li>
        <li>Case-Insensitive Searches</li>
        <li><a href="../Features/Proximity%20Searches.htm">Proximity Searches</a></li>
        <li>Phrase Searches</li>
        <li><a href="../Features/Synonym%20Searches.htm">Synonym Searches</a> 
          using:</li>
        <ul>
          <li>Built-in Thesaurus</li>
          <li>User-managed synonym lists</li>
        </ul>
        <li><a href="../Features/Spell-Checked%20Searches.htm">Spell checked Searches</a></li>
        <li><a href="../Features/Misspelling%20Searches.htm">Misspelling Searches</a></li>
        <li><a href="../Features/Form%20Searches.htm">Form Searches</a> including 
          plurality, conjugations and derivations</li>
        <li><a href="../Features/Phonetic%20Searches.htm">Phonetic Searches</a></li>
      </ul>
      <p><img src="../../images/arrow.gif" width="10" height="10">User-controlled 
        stop word lists</p>
      <p><img src="../../images/arrow.gif" width="10" height="10">Retrieval and 
        ordering by relevancy scores</p>
      <p><img src="../../images/arrow.gif" width="10" height="10">Retrieval of 
        preformatted excerpts showing contexts of qualified words or phrases.</p>
      <p><img src="../../images/arrow.gif" width="10" height="10">Retrieval of 
        metadata using SQL, for synonym, form, spelling, stopword and definition 
        searches. </p>
      <p>&nbsp;</p>
      <p class="line">&nbsp;</p>
      <h3><a name="datatypes"></a>Textual Data Types</h3>
      <p>The new text search capabilities are available for use with any of the 
        following textual data types:</p>
      <ul>
        <li><a href="../../Appendix/Supported%20Datatypes.htm#char">CHARACTER</a></li>
        <li><a href="../../Appendix/Supported%20Datatypes.htm#cstring">C STRING</a></li>
        <li><a href="../../Appendix/Supported%20Datatypes.htm#varchar">VARCHAR</a></li>
        <li><a href="../../Appendix/Supported%20Datatypes.htm#clob">CLOB</a></li>
        <li><a href="../../Appendix/Supported%20Datatypes.htm#blob">BLOB</a></li>
        <li><a href="../../Appendix/Supported%20Datatypes.htm#odxvarchar">OMNIDEX 
          VARCHAR</a></li>
        <li><a href="../../Appendix/Supported%20Datatypes.htm#odxclob">OMNIDEX 
          CLOB</a></li>
        <li><a href="../../Appendix/Supported%20Datatypes.htm#odxblob">OMNIDEX 
          BLOB</a></li>
      </ul>
      <p><img src="../../images/note.gif" width="12" height="15">Omnidex also 
        has limited support for four UNICODE textual data types. The new text 
        search capabilities can be used with these UNICODE data types with certain 
        restrictions. See <a href="../../Appendix/Supported%20Datatypes.htm">Supported 
        Data Types</a> for more information.</p>
      <p>&nbsp;</p>
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