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    <td align="right" class="bar"> <!-- InstanceBeginEditable name="Section Title" --> 
      <h1>Omnidex Concepts - Indexing Options</h1>
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      <p><a href="#rules">Composite Index Rules</a></p>
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      <h2>Omnidex Indexes</h2>
      <p>Omnidex indexes can be delineated into two major sections. Multi-Dimensional 
        Keyword (MDK) Indexes and Aggregation/Sorted Key (ASK) Indexes.</p>
      <ul>
        <li>MDK Indexes provide a very powerful and flexible means of accessing 
          data. Individual data values in a column are indexed as keywords, allowing 
          data to be qualified for retrieval based on keyword values or partial 
          keyword values, without knowing the primary key or rowid. They also 
          support progressive, or &#8220;drill-down&#8221;, searches. </li>
        <li>Aggregation/Sorted Key (ASK) Indexes provide sorted retrieval capabilities 
          as well as aggregation index retrieval speeds unparalled by normal dbms 
          aggregations. Data is retrieved in sorted order based on key values 
          without knowing the native key or rowid. ASK indexes are used for sorted 
          retrievals, range retrievals, high-speed aggregations, and comparison 
          operations. </li>
      </ul>
      <p>Composite indexes use part of a column or a combination or columns in 
        an index. They can be created from both MDK and ASK indexes to give some 
        additional flexibility when performing searches.</p>
      <p>There are two special ASK composite indexes:</p>
      <ul>
        <li>Index-only access composite indexes allow high speed searches and 
          data warehousing installations. </li>
        <li>Aggregate indexes quickly display sums, averages, counts, and minimum 
          or maximum values for a group of rows. </li>
      </ul>
      <p>An installation can include any or all index types. The types of indexes 
        installed depends on the the questions most commonly asked.</p>
      <p>&nbsp;</p>
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