MySQL User Defined Function Example: Data Cleanup

(Updated June 9, 2016) The Challenge One of my current projects involves migrating a large amount of data away from an old custom Borland Paradox application into a new CiviCRM system. As with too many quickly-constructed apps, this old Paradox database wasn’t especially well designed and, among other the other challenges in salvaging the data, there were…

A Return to Programming

I’ve been working on a number of different projects lately, from I.T. networking to a book on MySQL, so I haven’t had as much reason to break out the programming tools as I used to. If not used regularly, programming skills can get a little rusty or even disappear like old friends from your college…

From Algorithm to Code

In previous articles, I’ve talked about the importance of finding the right algorithm, or series of steps to follow, when coding a solution. Efficiency in terms of the amount of memory used and the amount of time taken by the operation are key factors for the program. Sometimes an appropriate algorithm is already available and in…

Fixing the Orange (or Red) Status Icon in WampServer

As part of my latest project, I decided to try out WampServer, the Windows development environment for developing web applications with Apache web server, MySQL database and PHP scripting (Windows, Apache, MySQL, PHP – WAMP). Packages like WampServer and EasyPHP are simplified ways to create a testing environment on your PC without spending a lot…

What is Recursive Programming?

When writing programs, it’s often necessary to perform repeating operations on collections of items such as customer orders or invoices.  Often, you can just iterate through the collection or count the items to determine how many times to perform the operation.  When working with a hierarchy of items such as a directory structure where you have…

Using Visual Studio to Manage Your Data

(This article was updated in August 2018 for use with Visual Studio 2017.) Moving Beyond Microsoft Access I’ve written a lot about Microsoft Access over the years and still believe it’s a great training ground for people who want to learn to design database applications. Its user-friendly interface provides an easy learning curve and introduction…