Executing SQL query in portal database

Question

Hi ,
   I wish to do a simple POC . I need to create a table from NWDS , populate it with some data and then access the table data using an sql query . I am aware how to create a table but I am not sure where exactly to write the query .
What I would like to understand is
1) If I create a table where would that table get created (The database) ?
2) Where would I write that query in NWDS ?
3) How would I execute that query in that database ?
Please help for the same .
(Needless to say that I always award points )
Regards
Deepak Singh

Answer 1

Hi Gopal ,
   Thanks for the reply .This is what I did . I am pasting the whole code of the class that I am using to do the POC .
package com.gravity;
import java.sql.Connection;
import java.sql.Statement;
import java.util.Hashtable;
import javax.naming.InitialContext;
import javax.sql.DataSource;
/*import sun.jdbc.odbc.ee.DataSource;/
@author Administrator
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public class DataHandling {
public static void DataPost(){
     Connection con = null ;
     try {
Added code
        Hashtable env = new Hashtable();
          env.put(javax.naming.Context.INITIAL_CONTEXT_FACTORY, "com.sap.engine.services.jndi.InitialContextFactoryImpl");
          System.out.println("initial_context_factory put ");
          env.put(javax.naming.Context.PROVIDER_URL, "gms29:50004");
          System.out.println("provide_url put ");
          env.put(javax.naming.Context.SECURITY_PRINCIPAL, "j2ee_admin");
          System.out.println("security_principal put ");
          env.put(javax.naming.Context.SECURITY_CREDENTIALS, "gravity");
          env.put("domain", "true");
          env.put("force_remote", "true");
          System.out.println("security_credentials put ");
          InitialContext iCtxt = new InitialContext(env);
          System.out.println("Object made for initial context ");
          DataSource ds = (DataSource) iCtxt.lookup("jdbc/my_db");
          System.out.println("Datasource obtained ");
          try {
               con = ds.getConnection();
               Statement stmt = con.createStatement();
                    String query1 ="insert into EmpData (EMPCODE,EMPNAME) VALUES('naveen',125188)";
                    String query2 ="insert into EmpData (EMPCODE,EMPNAME) VALUES('deepak',125189)";
                    String query3 ="insert into EmpData (EMPCODE,EMPNAME) VALUES('rajeev',125190)";
               stmt.executeUpdate(query1);
               stmt.executeUpdate(query2);
               stmt.executeUpdate(query3);
              }catch (Exception e) {
               e.printStackTrace();
         }catch (Exception e) {
                e.printStackTrace();
                                     } finally {
                                        try {
                                        con.close();
                                            }catch (Exception e) {
                                            e.printStackTrace();
public static void main (String[] args){
     System.out.println("Hello");
     DataPost();
I have imported all the driver jar files and sapj2eeclient.jar in the classpath .
Also the drivers found in the path
172.16.161.11\usr\sap\EP1\DVEBMGS00\j2ee\cluster\server0\bin\ext\com.sap.portal.jdbcdrivers
have all been added to the classpath .(Not sure if this is required)
Let me know what you find wrong in my code and in the meanwhile I will try to implement what you suggested .
Regards
Deepak Singh