• At least 3 years of experience and are managed by a senior programmer with at least 10 years of experience in the field
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.NET Overview

.NET is the Microsoft Web services strategy to connect information, people, systems, and devices through software. Integrated across the Microsoft platform, .NET technology provides the ability to quickly build, deploy, manage, and use connected, securityenhanced solutions with Web services. .NETconnected solutions enable businesses to integrate their systems more rapidly and in a more agile manner and help them realize the promise of information anytime, anywhere, on any device.

The Microsoft platform includes everything a business needs to develop and deploy a Web serviceconnected IT architecture servers to host Web services, development tools to create them, applications to use them, and a worldwide network of more than 35,000 Microsoft Certified Partner organizations to provide any help you need. 

What Are Web Services

If you ask a developer what Web services are, you'll hear something like, selfdescribing software modules, semantically encapsulating discrete functionality, wrapped in and accessible via standard Internet communication protocols like XML and SOAP.

But if you ask a business leader who has implemented Web servicebased solutions, you'll get a different kind of answer. You'll hear that Web services are an approach that helps the business connect with its customers, partners, and employees. They enable the business to extend existing services to new customers. They help the business work more efficiently with its partners and suppliers. They unlock information so it can flow to every employee who needs it. They reduce development time and expense for new projects. You'll hear less about what Web services are and more about what they enable the business to do.

Benefits of Web Services

By enabling applications to share data across different hardware platforms and operating systems, Web services provide many benefits, including

	Opening the door to new business opportunities by making it easy to connect with partners.
	Delivering dramatically more personal, integrated experiences to users through the new breed of smart devicesincluding PCs.
	Saving time and money by cutting development time.
	Increasing revenue streams by enabling businesses to easily make their own Web services available to others.

Connecting Applications Through Web Services

Web services are revolutionizing how applications talk to other applicationsor, more broadly, how computers talk to other computersby providing a universal data format that lets data be easily adapted or transformed. Based on XML, the universal language of Internet data exchange, Web services can communicate across platforms and operating systems, regardless of the programming language in which the applications are written.

Each Web service is a discrete unit of code that handles a limited set of tasks. However, although Web services remain independent of each other, they can loosely link themselves into a collaborating group that performs a particular task.

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PHP is a serverside scripting language for creating dynamic Web pages. You create pages with PHP and HTML. When a visitor opens the page, the server processes the PHP commands and then sends the results to the visitor's browser, just as with ASP or ColdFusion. Unlike ASP or ColdFusion, however, PHP is Open Source and crossplatform. PHP runs on Windows NT and many Unix versions, and it can be built as an Apache module and as a binary that can run as a CGI. When built as an Apache module, PHP is especially lightweight and speedy. Without any process creation overhead, it can return results quickly, but it doesn't require the tuning of modperl to keep your server's memory image small.

In addition to manipulating the content of your pages, PHP can also send HTTP headers. You can set cookies, manage authentication, and redirect users. It offers excellent connectivity to many databases and ODBC, and integration with various external libraries that let you do everything from generating PDF documents to parsing XML.

PHP goes right into your Web pages, so there's no need for a special development environment or IDE. You start a block of PHP code with <php and end it with >. You can also configure PHP to use ASPstyle < > tags or even <SCRIPT LANGUAGEphp></SCRIPT>. The PHP engine processes everything between those tags.

PHP's language syntax is similar to C's and Perl's. You don't have to declare variables before you use them, and it's easy to create arrays and hashes associative arrays. PHP even has some rudimentary objectoriented features, providing a helpful way to organize and encapsulate your code.

• At least 3 years of experience and are managed by a senior programmer with at least 10 years of experience in the field
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I guess the first question is really, What is a database A database is an organized collection of data. The data can be textual, like order or inventory data, or it can be pictures, programs or anything else that can be stored on a computer in binary form.

A relational database stores the data in the form of tables and columns. A table is the category of data, like Employee, and the columns are information about the category, like name or address.

Some databases have minimal feature sets and only store data, while others include programming languages, facilities and utilities to support enterpriselevel applications like ERP and data warehousing. Oracle is the 1 database and has the most advanced feature set.

Oracle is made up of a set of processes running in your operating system. These processes manage how data is stored and how it is accessed. I will cover these processes in detail in the future; but for now we just need to understand that Oracle is a program that is running in the background, maintaining your data for you and figuring out where it should go on your hard drive.

In almost all relational databases, data is accessed through SQL, or Structured Query Language, and Oracle is no exception. SQL allows you to SELECT your data, INSERT new records, UPDATE existing records and DELETE records you want to get rid of. SQL can be embedded in other languages or you can run scripts of SQL directly against the database.

PL/SQL is the procedural language extension to SQL. PL/SQL is a programming language like C, Java or Pascal. In the Oracle world, there is no better way to access your data from inside a program. SQL can be natively embedded in PL/SQL programs. I will be using both SQL and PL/SQL very heavily in my future articles.

PL/SQL is a featurerich language geared toward developing database applications. PL/SQL is the procedural language of the database, but it is also the procedural language for most of Oracle's tools. Programs that run inside the database are called stored procedures. These stored procedures are almost always PL/SQL, but can be written in Java.

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HTML Overview

HTML is a computer language devised to allow website creation. These websites can then be viewed by anyone else connected to the Internet. It is relatively easy to learn, with the basics being accessible to most people in one sitting; and quite powerful in what it allows you to create. It is constantly undergoing revision and evolution to meet the demands and requirements of the growing Internet audience under the direction of the WC3, the organisation charged with designing and maintaining the language.

The definition of HTML is HyperText Markup Language.

• HyperText is the method by which you move around on the web by clicking on special text called hyperlinks which bring you to the next page. The fact that it is hyper just means it is not linear i.e. you can go to any place on the Internet whenever you want by clicking on links there is no set order to do things in.
• Markup is what HTML tags do to the text inside them. They mark it as a certain type of text italicised text, for example.
• HTML is a Language, as it has codewords and syntax like any other language.

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JAVA Overview

The Java programming language is a highlevel language that can be characterized by all of the following buzzwords

Simple	Architecture neutral
Object oriented	Portable
Distributed	High performance
Multithreaded	Robust
Dynamic	Secure

In the Java programming language, all source code is first written in plain text files ending with the .java extension. Those source files are then compiled into .class files by the javac compiler. A .class file does not contain code that is native to your processor; it instead contains bytecodes the machine language of the Java Virtual Machine¹ Java VM. The java launcher tool then runs your application with an instance of the Java Virtual Machine.

A platform is the hardware or software environment in which a program runs. We've already mentioned some of the most popular platforms like Microsoft Windows, Linux, Solaris OS, and Mac OS. Most platforms can be described as a combination of the operating system and underlying hardware. The Java platform differs from most other platforms in that it's a softwareonly platform that runs on top of other hardwarebased platforms.

The Java platform has two components

• The Java Virtual Machine
• The Java Application Programming Interface API

You've already been introduced to the Java Virtual Machine; it's the base for the Java platform and is ported onto various hardwarebased platforms.

The API is a large collection of readymade software components that provide many useful capabilities. It is grouped into libraries of related classes and interfaces; these libraries are known as packages.

As a platformindependent environment, the Java platform can be a bit slower than native code. However, advances in compiler and virtual machine technologies are bringing performance close to that of native code without threatening portability.

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MySQL Overview

To retrieve information from a database, you first need to have a database. That's where MySQL comes in. MySQL is an opensource highperformance, multithreaded, multiuser relational database management system RDBMS built around a clientserver architecture. It was designed specifically for speed and stability and has become one of the most popular RDBMS for databasedriven Web applications, both on and off the Web. Today, more than 4 million web sites create, use, and deploy MySQLbased applications; that number rises daily.

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JavaScript Overview

JavaScript is a scripting language used in many websites. A scripting language is a language, which is easy and fast to learn. So is this reference. A scripting language is interpreted in runtime. It is not compiled like other languages as C, C, VB.NET etc. JavaScript is a client side language and it runs on the client browser. Netscape developed it and because of its simplicity it is one of the most known scripting languages. However JavaScript can be also used on the serverside. JavaScript can be used on all most known browsers. It can be easily used to interact with HTML elements. You can validate text fields, disable buttons, validate forms, or change the background color of your page. All this is possible with JavaScript. Like each programming language, it contains variables, arrays, functions, operators, objects and much more which can be help you to create better scripts for your pages. On the server side you can use JavaScript for example to manage your database entry. JavaScript code can be inserted directly in the HTML or you can place it in a separate file with the .js extension and link the web page with the .js file.

Is JavaScript a lighter version of Java

Many who havent worked before with java or scripting languages think that JavaScript is the same as Java or a lighter version of it. This is not true. Java is a different language developed by Sun Micro Systems. Java is much more complex then JavaScript. In Java you have to declare each variable with the type, in JavaScript you dont need to do that. All variables are declared when you first time use them. Furthermore in Java you have to declare all variables, functions and classes. In JavaScript you dont even need to think about these things. Java is compiled to byte codes on the server and the result is send to the client. JavaScript is interpreted on the client side it doesnt require any compilation.

Usage of JavaScript

Usually webdesigners design pages and coders code applications. However with JavaScript a designer has the possibility to create a client side application with very less efforts. He can easily create some kind of dynamic pages i.e. you can easily show a prompt box and asks the user to enter his name whenever the page loads for the first time. He can then use the entered value to create a welcome string. These procedures are called events. Events can be used and called when something occurs like loading the page for the first time. You could also write another event which is called whenever the page is closed. JavaScript is also mostly used to validate text fields. For example in asp.net you have the possibility to validate your controls with some validator controls. These validator controls are basically nothing more then a JavaScript file. This validation can be easily written with JavaScript to verify if a text field is empty or not.

• At least 3 years of experience and are managed by a senior programmer with at least 10 years of experience in the field
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ActiveX programming

• ActiveX automation is a programming technology that is defined by Microsoft.
• iSeries Access for Windows provides the following methods for accessing iSeries resources by using ActiveX automation

Automation objects

• These objects provide support for
• Accessing iSeries data queues
• Calling iSeries system application programming interfaces and user programs
• Managing iSeries connections and validating security
• Running CL commands on the iSeries server
• Performing datatype and codepage conversions
• Performing database transfers
• Interfacing with host emulation sessions
• iSeries Access for Windows OLE DB provider
• Call the iSeries Access for Windows OLE DB Provider, by using Microsoft's ActiveX
• Data Objects ADO, to access the following iSeries server resources
• The iSeries database, through recordlevel access
• The iSeries database, through SQL
• SQL stored procedures
• Data queues
• Programs
• CL commands
• Custom controls
• ActiveX custom controls are provided for
• iSeries data queues
• iSeries CL commands
• iSeries system names for previously connected systems
• iSeries Navigator