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<TITLE>Creating an OBJECT Type in an Oracle Database (Java Developers Almanac Example)
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<B><A HREF="../java.sql/pkg.html#Oracle OBJECTs">Oracle OBJECTs</A></B><font color="#666666" class="xsmall-font">
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<h3>e296. Creating an OBJECT Type in an Oracle Database</h3>
In Oracle, you can define a composite data structure called an OBJECT,
which consists of one or more basic types. For example, you could
define an object called <code>book</code> with a title (VARCHAR) and an price
(NUMBER). An OBJECT can also contain other OBJECTs.
<P> This example creates two OBJECT types. <code>object2</code> contains two
fields --- a string and a number while <code>object1</code> also contains two
fields --- a string and a value of type <code>object2</code>.
<P> The example also creates a table to hold <code>object1</code> values. See
also <a href="../java.sql/InsertObjectOracle.html" class="eglink"><b>e297</b> Inserting an OBJECT Value into an Oracle Table</a>.
<pre> try {
// Create a statement
Statement stmt = <font color="#0066ff"><i>connection</i></font>.createStatement();
// Create the object2 type
stmt.execute("CREATE TYPE object2 AS OBJECT"
+ "(col_string2 VARCHAR(30), col_integer2 NUMBER)");
// Create the object1 type
stmt.execute("CREATE TYPE object1 AS OBJECT"
+ "(col_string1 VARCHAR(30), col_integer2 object2)");
// Create a table with a column to hold a number and the new object1 type
stmt.execute("CREATE TABLE object1_table(col_integer NUMBER, col_object1 object1)");
} catch (SQLException e) {
}
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<b>Related Examples</b></font></td>
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e297. <a class="eglink" href="InsertObjectOracle.html?l=rel">
Inserting an OBJECT Value into an Oracle Table
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e298. <a class="eglink" href="InsertObjectOraclePreparedStatement.html?l=rel">
Inserting an OBJECT Value into an Oracle Table Using a Prepared Statement
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e299. <a class="eglink" href="GetObjectOracle.html?l=rel">
Getting an OBJECT Value from an Oracle Table
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e300. <a class="eglink" href="DropObjectOracle.html?l=rel">
Deleting an OBJECT Type from an Oracle Table
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See also:
<a class="eglink" href="/egs/java.sql/pkg.html?l=rel#Batching">
Batching
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<a class="eglink" href="/egs/java.sql/pkg.html?l=rel#Connections">
Connections
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<a class="eglink" href="/egs/java.sql/pkg.html?l=rel#Database%20Meta%20Data">
Database Meta Data
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<a class="eglink" href="/egs/java.sql/pkg.html?l=rel#Deleting%20Data">
Deleting Data
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<a class="eglink" href="/egs/java.sql/pkg.html?l=rel#Drivers">
Drivers
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<a class="eglink" href="/egs/java.sql/pkg.html?l=rel#Importing%20and%20Exporting">
Importing and Exporting
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<a class="eglink" href="/egs/java.sql/pkg.html?l=rel#Inserting%20and%20Updating%20Data">
Inserting and Updating Data
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<a class="eglink" href="/egs/java.sql/pkg.html?l=rel#Oracle%20VARRAYs">
Oracle VARRAYs
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<a class="eglink" href="/egs/java.sql/pkg.html?l=rel#Procedures%20and%20Functions">
Procedures and Functions
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<a class="eglink" href="/egs/java.sql/pkg.html?l=rel#Retrieving%20Data">
Retrieving Data
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<a class="eglink" href="/egs/java.sql/pkg.html?l=rel#Scrollable%20Result%20Sets">
Scrollable Result Sets
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Tables
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<a class="eglink" href="/egs/java.sql/pkg.html?l=rel#Updatable%20Result%20Sets">
Updatable Result Sets
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