User-defined functions are flexible and easy to create. Add them to your development toolkit to create powerful new solutions for your company.

By Bruce Vining

Many of you are quite familiar with DDS and the ability to define physical and logical database files. For instance, if we have a physical file MYFILE defined as shown below, we can create logical files that provide a subset of the physical file fields, map physical fields to logical fields through operators such as CONCAT and SST, map physical data types to other types, etc.:

by Sam Lennon

Often, I need to convert from legacy dates to true dates. I convert mostly so I can easily do date arithmetic, but sometimes just for readability in ad hoc queries over old files. I'm a big fan of true dates and preach their usage when I get the chance, but there is some CPU overhead. This article is about improving efficiency in converting to true dates and reducing some of that overhead.

Dig more into what you can do with frames and see why they could be useful for you.

By Jan Jorgensen

In my previous frame-crossing tip, I showed you how to send information between various frames on a Web page using just HTML and JavaScript. This time, I have added in a few RPG CGI programs and some more JavaScript. Actually, I have written a small application in which you can maintain an order header and add order lines to an order detail file.

Touted for reducing energy consumption and making efficient use of servers and floor space, virtualization can also be the foundation for a smart DR plan.

By Chris Smith

I don't know whether it's because of improved communications of the 21st century (which has raised our awareness), population increases, or just bad luck, but it seems that there are more disasters lately than there were a few years back. I guess when you grasp the full significance of our clinging to a little ball--the Earth--wobbling around in a very unfriendly void, you can't help but feel a little insecure.