The object-oriented paradigm is founded on a collection of concepts and principles which have a hierarchical relationship with each other. When moving towards from concepts to design patterns the problems and solutions get more concrete and sensible. Here it is a map which shows this hierarchy and how each philosophy of problem-solving in the object-oriented Read More…

In the first part of this topic, I described how can we start a software problem from scratch, that step results in a simplified perspective from the real-world objects and concepts which helps to omit a part of problem intrinsic complexity by focusing on a limited part of the data properties and business relation between Read More…

A Line-Of-Business application or for short a LOB application is a one of the critical computer applications that are vital to running an enterprise. LOB applications are usually large programs that contain a number of integrated capabilities and tie into databases and database management systems. These applications are responsible for integrating three fundamental pillars of Read More…

You should hear about MRI; it’s an abbreviation for “Magnetic resonance imaging” according to Wikipedia’s definition “Magnetic resonance imaging” (MRI) is a medical imaging technique used in radiology to form pictures of the anatomy and the physiological processes of the body in both health and disease. MRI scanners use strong magnetic fields, magnetic field gradients, Read More…

Object-oriented Analysis and Design plus Object-oriented programming have been new approaches in the software development since 1967, during more than fifteen years, the foundation of this paradigm is so robust and reliable, so that makes this thinking framework as the most dominant problem-solving in software production. Thanks to all pioneers and influencers of this paradigm Read More…

Recently I had a conversation with one of my students in the “Advanced Object-Oriented Design” course about why nowadays Functional programming paradigm is so interesting while for decades Object-oriented paradigm has been dominated paradigm. If you do some search on the web you find dozens of articles and debates about this topic, so, I don’t Read More…

When I was a novice programmer, I was interested in intricate designs, I believed if there is not a dozen of “Interfaces” either “Abstract classes” the design is not mature, I believed there are always many changes out of the door waiting for tackle the project. The result was a super complex design which tried Read More…

Beforehand, I have discussed the role of the simplicity in creating an efficient software design, and now in this article, I am going to use an example of the simplifying process to remove complexity factors from a real-world problem to reach a maintainable and good enough rich object-oriented design. The problem I want to solve Read More…