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<h1>Creating and Managing Tables</h1>
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<p><a id="sthref184" name="sthref184"></a>Tables are the basic units of data storage in Oracle Database. Tables hold all user-accessible data. Each table contains rows that represent individual data records. Rows are composed of columns that represent the fields of the records.</p>
<p>This section contains:</p>
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<p><a href="tdddg_objects004.htm#BABDACBC">About SQL Data Types</a></p>
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<p><a href="tdddg_objects005.htm#BABFEIDE">Creating Tables</a></p>
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<p><a href="tdddg_objects008.htm#BABJFCCE">Ensuring Data Integrity in Tables</a></p>
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<p><a href="tdddg_objects011.htm#BABGCIFC">Tutorial: Adding Rows to Tables with the Insert Row Tool</a></p>
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<p><a href="tdddg_objects012.htm#CIHGJCJE">Tutorial: Changing Data in Tables in the Data Pane</a></p>
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<p><a href="tdddg_objects013.htm#CIHJEAAH">Tutorial: Deleting Rows from Tables with the Delete Selected Row(s) Tool</a></p>
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<p><a href="tdddg_objects014.htm#BABHAGCH">Managing Indexes</a></p>
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<p><a href="tdddg_objects018.htm#BABEHICG">Dropping Tables</a></p>
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<p><span class="bold">Note: </span>To do the tutorials in this document, you must be connected to Oracle Database as the user <code>HR</code> from SQL&nbsp;Developer. For instructions, see <a href="tdddg_connecting006.htm#BABIAAIA">"Connecting to Oracle Database as User HR from SQL&nbsp;Developer"</a>.</p>
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<h2>Related Topics</h2>
<p><a href="tdddg_exploring002.htm#BABGFBBA">Tutorial: Viewing EMPLOYEES Table Properties and Data</a></p>
<p><a href="javascript:open('http://www.oracle.com/pls/db112/lookup?id=CNCPT940','newWindow').focus()"><span class="italic">Oracle Database Concepts</span></a></p>
<p><a href="tdddg_objects.htm#BABHJCIF">Creating and Managing Schema Objects</a></p>
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