SQL (Structured Query Language) is a standard programming language for generating, manipulating, and retrieving information from a relational database. If you're working with a relational database--whether you're writing applications, performing administrative tasks, or generating ... more

In 2000, Jakob Nielsen, the world's leading expert on Web usability, published a book that changed how people think about the Web Designing Web Usability (New Riders). Many applauded. A few jeered. But everyone listened. The best-selling usability guru is back and has revisited his classic... more

Regular expressions help users and developers to find and manipulate text more effectively and efficiently. In addition, regular expressions are supported by many scripting languages, programming languages, and databases. This example-rich tutorial helps debunk the traditional reputation of... more