Programming Articles & Tutorials

What is CAPTCHA? CAPTCHA stands for “completely automated public turing test to tell computers and humans apart” and is a way for you to try and ensure that the visitor submitting a form on your website is actually a person. … Continue reading →

 Before I even started developing ActiveKB NX, I had to decide which new features were going to make it into the new release. I got ideas for new features from lots of places including the guys in the office, our … Continue reading →

A visitor reading the second part of this tutorial asked what table joins are and how you use them. Because of that, this months tutorial is about exactly that – so remember, if you have a comment or question, make … Continue reading →

Put simply, database indexes help speed up retrieval of data. The other great benefit of indexes is that your server doesn’t have to work as hard to get the data. They are much the same as book indexes, providing the … Continue reading →

Why do we need to worry about the data types we’re storing in a database? Well mainly because it helps you with database design. Did you know that the database itself can help to keep bad data out (for example … Continue reading →

Databases are used every day, sometimes without us realizing. They are everywhere. The most basic example is a telephone book or a library card index. They can store all sorts of information, from phone numbers to map grids and references, … Continue reading →

Introduction Javascript alert boxes have long been used for validating HTML forms. For example, if you forget to type your name into a contact form, then a Javascript alert pops up telling you about your error and how to correct … Continue reading →