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his introductory article explores what it means to be a mashup, the different classes of popular mashups constructed today, and the enabling technologies that mashup developers leverage to create their applications. Additionally, you'll see many of the emerging technical and social challenges you face when you deep-dive into mashup development.

The developerWorks online trials program lets you try out Rational Application Developer features without downloading and installing it on your own system. Developers can quickly design, develop, analyze, test, profile and deploy high-quality Web, service-oriented architecture (SOA), Java, J2EE, and UML portal applications.

Learn the basics of how you can manipulate XML with JavaScript code in the fastest growing browser in the world. Included are code examples and screenshots, all of which were created and tested using Firefox 1.5.0.4 on Ubuntu Linux.

Here's a sober talk about the reality of the mainframe today

Its a good idea to review the potential impacts throughout the full development life cycle of introducing Ajax technology into Java EE Web applications.

take a look at how automated inspectors like CheckStyle, JavaNCSS, and CPD enhance the development process and when you should use them.

This article introduces Web services in Rails and focuses on a strategy known as Representational State Transfer (REST).

Databases are powerful tools, and -- like all powerful tools -- they can be abused if you don't know how to use them properly. Here are the five most common problems in database design, in the PHP code that accesses databases, and how to avoid them.

Examine how to best migrate your Linux skills to take advantage of AIX and Solaris. This tutorial will show you how to cope and understand the nuances and differences.

Learn step-by-step how to incorporate Scalable Vector Graphics (SVG) into Web pages.

The new paradigm of Web application development goes far beyond the traditional Model-View-Controller (MVC) model. Unfortunately, many Ajax Web application frameworks, such as Direct Web Remoting (DWR) and JavaServer Faces (JSF), can present challenges. Learn how XQuery can be effective in facing these challenges, as you build a powerful mashup application.

Developers and architects might be particularly interested in this discussion of Laszlo, XUL, XForms, Macromedia Flex, and Dojo

In this increasingly virtual online world, you have to be careful to protect your data. Learn the basics of encoding and encrypting important bits of information, such as passwords, credit card numbers, and even entire messages. Get an overview of what it means to encrypt and decrypt information, as well as some practical examples involving passwords and other data, using PHP's built-in functionality.

These tutorials provide a solid base for each section of the exam, including: server management, data placement, database access, monitoring DB2 activity, DB2 utilities, Backup and recovery, and split mirroring and HADR.

Derby is a great database for Ajax applications -- particularly if the client and server are on the same host -- due to Derby's zero admin requirements and ability to be embedded. This article explains all the steps and requirements to create an embedded database and Web server application. The source code and a ready to run application provided as a zip file are available for download. The Derby database acts as the data repository, the Jetty Web server or servlet container handles the HTTP requests, and Ajax technologies are used to enhance the presentation and responsiveness of the client.

If you're developing Java EE applications using the Eclipse integrated development environment, IBM has just made your life a little easier. We're providing one-stop access to two value-added Eclipse 3.2 bundles that include key projects in the Callisto release: Web Tools Platform (WTP) and Graphical Modeling Framework (GMF). Download one or both of these free Eclipse project bundles from our high-bandwidth servers with fiber connections to the Internet. Registration is NOT required

Design patterns are just for Java architects -- at least that's what you may have been led to believe. In fact, design patterns are useful for everyone. If these tools aren't exclusive to architecture astronauts, what are they, and why are they useful in PHP applications? This article explains.

Structured programming and object-oriented programming both revolutionized the way business applications are built. But other programming models exist, and some visionaries argue that those paradigms are more productive than object-oriented programming. This article explores the basics of functional programming using Haskell. Learning a functional language can reshape ways you think about Java programming.

This eKit contains demos, articles, webcasts and best practices for Rational performance and load testing, functional testing, test automation, manual testing, and runtime analysis. Its designed to improve your test efficiency and accuracy, validate performance and scalability, manage and control your test projects, improving code quality, and provide tips and techniques for successful testing.

DWR simplifies your work by hiding almost all the details of Ajax and allows you to concentrate on the task at hand instead of the nuts and bolts of Ajax development.