web2py was launched in 2007 and now, after three years of continuous development, we have reached a very much needed third edition of this book. During this time web2py has managed to win the affection of many knowledgeable users and developers who share...

Ad hoc and sensor networks continue to have a growing impact on communication. These cost-effective wireless networks provide location independent computing in environments ranging from military battlefields to in-home patient monitoring systems. However, having real-time connectivity to critical information over an open...

Currently the mobile wireless technology is experiencing rapid growth. However the major challenge for deployment of this technology with its special characteristics is securing the existing and future vulnerabilities. Major security and privacy issues for standard wireless networks include the authentication of wireless clients and...

Gaining access to the interactive learning activities on this Online Companion is easy—all you need to do is create a user profile. This simple, one-time process establishes you as a user in the CoursePort authentication system. By utilizing the Online Companion, students and instructors can reinforce the concepts they’re...

PHP: Hypertext Preprocessor, or PHP, is an open source programming language that is used for developing interactive Web sites. More specifi cally, PHP is a scripting language that is executed from a Web server. Created in 1995, PHP is one of the fastest-growing programming languages today. Th e TIOBE Programming Community Index1...

I first began developing social applications when Facebook opened up its developer platform in 2007, giving people like me a taste of the extensive social data that an application can use to improve growth and target personalization settings. At the time, I was building social fantasy sports applications for CBSSports.com, pulling user...

Moving your classes and resources online with a Learning Management System such as Moodle opens up a whole world of possibilities for teaching your students. However, it also opens up a number of threats as your students, private information, and resources become vulnerable to cyber attacks. Learn how to safeguard Moodle to keep the bad guys...

Oracle Application Express (APEX) is a rapid web application development tool integrated directly into the Oracle database. APEX is a completely web-based application featuring many ready to use components, allowing developers to build and deploy professional web applications rapidly. Using SQL and PL/SQL as the development language it...

Historically, computer security is related to both cryptography and access control in operating systems. Cryptography, although mostly applied in the military and diplomacy, was used to protect communication channels and storage facilities (especially the backups). In the seventies there was a breakthrough in cryptography - the...

Ever since the late 1990s when Java servlets and JavaServer Pages (JSPs) came into widespread use, web site developers have been switching from CGI scripting languages to servlets and JSPs. As a result, there has been tremendous growth in the use of servlets and JSPs. Today, there's little doubt that scrvlet and JSP technology is here to...