Data Virtualization

They say it’s a mature technology!

I have to do a lot of catching up to learn this!

Thanks to the various posts which I found … and collected here :

  1. Data Virtualization Reaches Critical Mass According to New Forrester Research Report
  2. Ready, Set, Go! Get Started on Data Virtualization
  3. Ten Mistakes to Avoid When Virtualizing Data – Part 1
  4. Ten Mistakes to Avoid When Virtualizing Data – Part 2
  5. We Wrote the Book on Data Virtualization!

A Puzzle Game

The program is a group quiz given to my Object Oriented Programming class.

This demonstrates the use of buttons and grid layout manager.

Test DB Driver

JDBC or Java Database Connectivity is the Applications Programming Interface (API) for accessing databases.

The program is a demonstration of JDBC using MS Access database.

It shows how a table could be created and manipulated using statement and PreparedStatement.

Event Handling

Most users are comfortable using Graphical User Interfacing when using computers. Java Programming Language provides developer with a variety of tools to create highly intuitive and user-friendly applications.

GridBagLayout Demonstration

GridBagLayout is the most complex yet most flexible among the Layout Managers used in Java Programming. It allows developer to position any component on the preferred frame location.

Layout Managers

/**
 *
 * @author ariel e. isidro
 *
 */
import java.awt.*;
import java.awt.event.*;

public class LayoutTest extends Frame {

Abstract Windowing Toolkit Components

/**
 *
 * @author ariel e. isidro
 *
 */
import java.awt.*;
import java.awt.event.*;

public class FrameDemo extends Frame {

How to Configure Postfix in Ubuntu Server (Part 3-IMAP-Client)

  1. Verify the mail exchanger from the DNS server. Check that an MX entry exists in the DNS server, ask administrator as necessary. For tutorial on DNS, please click here

How to Configure Postfix in Ubuntu Server (Part 2-Maildir)

  1. Instruct Postfix to use Maildir instead of Mboxes; ensure that procmail is not used as mail delivery agent; and restart the server (MDA)
    sudo postconf -e "home_mailbox = Maildir/"
    sudo postconf -e "mailbox_command = "
    sudo /etc/init.d/postfix restart
    

How to Configure Postfix in Ubuntu Server (Part 1)

  1. Install postfix
    sudo apt-get install postfix
    

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