Create table with foreign key : Table « Database SQL JDBC « Java






Create table with foreign key

  
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/*
 * Copyright 2003 Sun Microsystems, Inc.  ALL RIGHTS RESERVED.
 * Use of this software is authorized pursuant to the terms of the license found at
 * http://developer.java.sun.com/berkeley_license.html.
 */ 

import java.sql.*;
     
public class ForeignKeysCoffees  {

  public static void main(String args[]) {
      
    String url = "jdbc:mySubprotocol:myDataSource";
    Connection con;
    String createString = "create table COFFEESFK " +
              "(COF_NAME varchar(32) NOT NULL, " +
              "SUP_ID int, " +
              "PRICE float, " +
              "SALES int, " +
              "TOTAL int, " +
              "primary key(COF_NAME), " +
              "foreign key(SUP_ID) references SUPPLIERSPK)";
    Statement stmt;
  
    try {
      Class.forName("myDriver.ClassName");
  
    } catch(java.lang.ClassNotFoundException e) {
      System.err.print("ClassNotFoundException: "); 
      System.err.println(e.getMessage());
    }

    try {
      con = DriverManager.getConnection(url, 
                   "myLogin", "myPassword");
      
      stmt  = con.createStatement();
      stmt.executeUpdate(createString);
  
      DatabaseMetaData dbmd = con.getMetaData();
  
      ResultSet rs = dbmd.getImportedKeys(null, null, "COFFEESFK");
      while (rs.next()) {
        String pkTable = rs.getString("PKTABLE_NAME");
        String pkColName = rs.getString("PKCOLUMN_NAME");
        String fkTable = rs.getString("FKTABLE_NAME");
        String fkColName = rs.getString("FKCOLUMN_NAME");
        short updateRule = rs.getShort("UPDATE_RULE");
        short deleteRule = rs.getShort("DELETE_RULE");
        System.out.println("primary key table name :  " + pkTable);
        System.out.print("primary key column name :  ");
        System.out.println(pkColName);
        System.out.println("foreign key table name :  " + fkTable);
        System.out.print("foreign key column name :  ");
        System.out.println(fkColName);
        System.out.println("update rule:  " + updateRule);
        System.out.println("delete rule:  " + deleteRule);
        System.out.println("");
      }
    
      rs.close();
      stmt.close();
      con.close();
  
    } catch(SQLException ex) {
      System.err.print("SQLException: ");
      System.err.println(ex.getMessage());
    }
  }
}





           
         
    
  








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