1. Chapter 13 Web Application Infrastructure

2. Objectives
Explain the components and purpose of a web application platform
Describe several common webapp platforms
Explain the nature and purpose of a webapp framework
Describe several common webapp frameworks
Explain the nature and purpose of a content management system
Describe several common content management systems

3. Web Application Platform
A webapp platform is the host environment for application development and operation
The platform includes
operating system, web server, language support, database support
Web
Application
Web
Server
Language
Support
Database
Support
platform
Operating System
Hardware

4. LAMP Linux, Apache, MySQL, PHP/Perl/Python
The LAMP platform appeared in mid 1990's and has become very popular
LAMP is open-source free software, which is one reason for its popularity

5. Microsoft / .NET All Microsoft products (licensed)
.NET supports multiple languages
Runs primarily on Windows Server O/S

6. Sun Microsystems/Java EE
Supports Java language development
Supported by multiple operating systems
Proprietary, free license

7. Web Application Framework
A webapp framework is a set of tools that support webapp development with:
A standard design model (e.g., MVC)
User interface toolkit
Reusable components for common functions (authentication, e-commerce, etc.)
Database support
Support for distributed system integration

8. Web Application Framework
Frameworks give application developers more powerful building blocks to work with

9. Java EE Java EE is based purely in the Java programming language
Includes
Java Servlets
Java Server Pages
Java DataBase Connectivity
Java Server Faces
Enterprise Java Beans
etc.

10. CLR Intermediate Language
.NET Framework
.NET Framework is a Microsoft (licensed) product
.NET supports many programming languages through its Common Language Runtime (CLR) system C#
ASP VB
C++
etc.
compilation
CLR Intermediate Language
CLR Interpreter

11. Ruby On Rails
Ruby: a dynamically typed object-oriented programming language
Rails: a webapp framework, featuring:
automatic code skeletons
built-in testing features
object-relation mapping
default implementation of common webapp functions

12. Struts A webapp framework based on Java EE Features:
use of MVC design paradigm
Centralized XML-based application configuration that can define many functions
Action definitions link user interface events to Controller and View modules

13. Content Management System
A CMS is a tool for creating, cataloging, and accessing documents (web pages)

14. Content Management System
A CMS can streamline and automate the process of creating, approving, deploying, and retiring web content

15. Workflow Management
A CMS can coordinate the steps involved in creating, editing, and approving web content within an organization

16. Content Management Systems
Joomla!
open source, free
based on MySQL and PHP
supports web pages, RSS feeds, blogs, etc.
Vignette
proprietary product
includes extensive workflow management support
integrates with related development tools

17. Web Application Software Stack
The webapp software stack includes platform, framework, CMS, and application

18. Review Webapp Platforms Webapp Frameworks Content Management Systems
LAMP, Microsoft/.NET Sun/Java
Webapp Frameworks
Java EE, .NET Framework, Ruby on Rails, Struts
Content Management Systems
Joomla!, Vignette
Webapp Software Stack