Web Applications are dynamic web sites
combined with server side programming which provide functionalities such as
interacting with users, connecting to back-end databases, and generating
results to browsers.
Examples of Web Applications are Online
Banking, Social Networking, Online Reservations, eCommerce / Shopping Cart
Applications, Interactive Games, Online Training, Online Polls, Blogs, Online
Forums, Content Management Systems, etc..
Technologies
There are two main
categories of coding, scripting and programming for creating Web Applications:
I. Client Side Scripting / Coding - Client Side Scripting is the type of code
that is executed or interpreted by browsers.
Client Side Scripting
is generally viewable by any visitor to a site (from the view menu click on
"View Source" to view the source code).
Below
are some common Client Side Scripting technologies:
·
HTML (HyperText Markup
Language)
·
CSS (Cascading Style
Sheets)
·
JavaScript
·
Ajax (Asynchronous
JavaScript and XML)
·
jQuery (JavaScript
Framework Library - commonly used in Ajax development)
·
MooTools (JavaScript
Framework Library - commonly used in Ajax development)
·
Dojo Toolkit
(JavaScript Framework Library - commonly used in Ajax development)
II. Server Side Scripting / Coding - Server Side Scripting is the type of
code that is executed or interpreted by the web server.
Server Side Scripting
is not viewable or accessible by any visitor or general public.
Below
are the common Server Side Scripting technologies:
- PHP (very common Server Side Scripting language - Linux / Unix based Open Source - free redistribution, usually combines with MySQL database)
- Zend Framework (PHP's Object Oriented Web Application Framework)
- ASP (Microsoft Web Server (IIS) Scripting language)
- ASP.NET (Microsoft's Web Application Framework - successor of ASP)
- ColdFusion (Adobe's Web Application Framework)
- Ruby on Rails (Ruby programming's Web Application Framework - free redistribution)
- Perl (general purpose high-level programming language and Server Side Scripting Language - free redistribution - lost its popularity to PHP)
- Python (general purpose high-level programming language and Server Side Scripting language - free redistribution)
Program Libraries
Program
libraries are a collection of commonly used functions, classes or subroutines
which provide ease of development and maintenance by allowing developers to
easily add or edit functionalities to a frameworked or modular type
application.
Web Application Frameworks
Web Application Frameworks are sets of
program libraries, components and tools organized in an architecture system
allowing developers to build and maintain complex web application projects
using a fast and efficient approach.
Web Application Frameworks are designed to
streamline programming and promote code reuse by setting forth folder
organization and structure, documentation, guidelines and libraries (reusable
codes for common functions and classes).
Web Application Frameworks - Benefits and Advantages
- Program actions and logic are separated from the HTML, CSS and design files. This helps designers (without any programming experience) to be able to edit the interface and make design changes without help from a programmer.
- Builds are based on the module, libraries and tools, allowing programmers to easily share libraries and implement complex functionalities and features in a fast and efficient manner.
- The structure helps produce best practice coding with consistent logic and coding standards, and provides other developers the ability to become familiar with the code in a short time.
Coding Guidelines, Standards & Convention
Coding guidelines are sets of rules and
standards used in programming a web application project.
These rules and standards apply to coding
logic, folder structure and names, file names, file organization, formatting
and indentation, statements, classes and functions, and naming conventions.
These rules also enforce writing clear comments and provide documentation.
Important benefits of using Coding Guidelines
- Creates the best environment for multiple programmers to work on the same project
- Provides ease of maintainability and version management
- Delivers better readability and understanding of the source code
- Insures that other developers can understand and become familiar with the code in a short time
Web Applications Lifecycle Model
Web Application Lifecycle is the process of
developing a web application and involvement of the multiple teams that are
engaged in the development process. Each organization may set forth its own
unique style of operating.
Some companies follow a certain standard model such as SDLC (System
Development Life Cycle) or Agile Software Development Model.
- SDLC is the traditional process of developing software or web applications by including research to identify and define the application requirements, information analysis, architectural design and specifications blueprint, team involvement, programming, testing and bug fixing, system testing, implementation and maintenance.
- Agile Software / Web Application Development is the iterative development process and development process practices that focus on collaboration of people involved and provide a better procedure to allow revisions and evolution of web application requirements. Agile methodology includes research, analysis, project management, design, programming, implementation, frequent testing, adaptation and maintenance.
Web Application Development Process
organizes a practical procedure and approach in application development.
The following list of procedures and
suggested documents provide a good outline for a Web Application Lifecycle and
Process:
- Roadmap Document: Defining Web Application, Purpose, Goals and Direction
- Researching and Defining Audience Scope and Security Documents
- Creating Functional Specifications or Feature Summary Document
- Team Collaboration and Project Management Document
- Technology Selection, Technical Specifications, Illustrative Diagram of Web Application Architecture and Structure, Development Methodology, Versions Control, Backups, Upgrades, Expansion and Growth Planning Document, Server Hardware / Software Selection
- Third Party Vendors Analysis and Selection (Merchant Account and Payment Gateway, SSL Certificate, Managed Server / Colocated Server Provider, Fulfillment Centers, Website Visitor Analytics Software, Third Party Checkout Systems, etc.)
- Application Visual Guide, Design Layout, Interface Design, Wire Framing
- Database Structure Design and Web Application Development
- Testing: Quality Assurance, Multiple Browser Compatibility, Security, Performance - Load and Stress Testing, Usability
- Maintenance
Web Application Testing
Testing is an important part of the Web
Application Development process. On occasion, testing would consume more
manpower and time than development itself.
Below is some of the most common testing
needed for any web application development process?
·
Quality Assurance and Bug Testing
·
Multiple Browser Compatibility
·
Application Security
·
Performance - Load and Stress Testing
·
Usability
Trends and Popularity
The demands for companies to build Web
Applications are growing substantially.
If planned and built correctly, web applications can:
- Reach and service millions of consumers and businesses
- Generate substantial, multi-layer / multi-category income from consumers, businesses and advertisers
- Easily build business goodwill and assets based on audience reach, popularity, technology and potential growth
Below are good reasons for companies to build
web applications:
- Companies want to streamline their internal departments and functions, operations, sales and project management, etc.
- Companies want to take advantage of a web based application's flexibility and versatility, by moving away from the traditional desktop application platform to the web application platform
- Companies want to gain more clients or better service their current clients by offering convenient services and solutions online
- Companies want to build new web applications to offer innovative services or solutions to online users and businesses
A Few Technical Skills Required to Build an App
Consider
the number of technical skills required to build an app these days.
Software Engineering
Databases
QA Testing
Integration
User Experience Design
Software Architecture
Visual Design
Building a Cross-Functional Team
Specialists with Generalist Skills
You might say that the best Scrum teams are
composed of specialists who retain a variety of generalist skills. There are
certain skills you must have
on your team… and you’ll need more than an “average” proficiency level in those
skills if you expect to build great software. But you also don’t want your
specialists to be idle when their specialty is not the focus of the current
sprint.
Take QA testing, for example. Every Scrum team should
have at least one dedicated QA engineer on board. But does all the testing need
to be done by the QA engineer? No. When it’s “all hands on deck” at the end of
a sprint, anyone and everyone available can be executing QA test plans.
On the other hand, you probably don’t want
your QA engineers writing code in their downtime (that could inadvertently
influence their testing). But if they possessed certain generalist skills,
they could help
with things like data entry, or visual design, or writing user stories, or…
whatever fits their particular skill set.
One rule of thumb I’ve noticed is that the
more versatile a Scrum team is, the more successful they can be. Specialist
knowledge is critical.
But when you bring more generalist knowledge to the table as well, you’ll often
discover deeper discussions, more creative solutions, and better overall
results.
If you need help building an effective web appdevelopment team, Ascendle can help. Contactus today and we’ll help you find the right path to web app success.
