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25 
26 package java.sql;
27 
28 import java.sql.Clob;
29 
30 /**
31  * The mapping in the Java<sup><font size=-2>TM</font></sup> programming language
32  * for the SQL <code>NCLOB</code> type.
33  * An SQL <code>NCLOB</code> is a built-in type
34  * that stores a Character Large Object using the National Character Set
35  *  as a column value in a row of  a database table.
36  * <P>The <code>NClob</code> interface extends the <code>Clob</code> interface
37  * which provides provides methods for getting the
38  * length of an SQL <code>NCLOB</code> value,
39  * for materializing a <code>NCLOB</code> value on the client, and for
40  * searching for a substring or <code>NCLOB</code> object within a
41  * <code>NCLOB</code> value. A <code>NClob</code> object, just like a <code>Clob</code> object, is valid for the duration
42  * of the transaction in which it was created.
43  * Methods in the interfaces {@link ResultSet},
44  * {@link CallableStatement}, and {@link PreparedStatement}, such as
45  * <code>getNClob</code> and <code>setNClob</code> allow a programmer to
46  * access an SQL <code>NCLOB</code> value.  In addition, this interface
47  * has methods for updating a <code>NCLOB</code> value.
48  * <p>
49  * All methods on the <code>NClob</code> interface must be fully implemented if the
50  * JDBC driver supports the data type.
51  *
52  * @since 1.6
53  */
54 
55 public interface NClob extends Clob { }
56