replacing the old HTML user guide with a Sphinx-managed user guide

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diff --git a/user_guide_src/source/database/table_data.rst b/user_guide_src/source/database/table_data.rst
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+##########
+Table Data
+##########
+
+These functions let you fetch table information.
+
+$this->db->list_tables();
+==========================
+
+Returns an array containing the names of all the tables in the database
+you are currently connected to. Example::
+
+	$tables = $this->db->list_tables();  foreach ($tables as $table) {    echo $table; }
+
+$this->db->table_exists();
+===========================
+
+Sometimes it's helpful to know whether a particular table exists before
+running an operation on it. Returns a boolean TRUE/FALSE. Usage example::
+
+	 if ($this->db->table_exists('table_name')) {    // some code... }
+
+Note: Replace *table_name* with the name of the table you are looking
+for.