The 4+1 View Model

These videos and article talk about in a short way the 4+1 view model, this little model consists in four sections and an extra section which is the +1 part, that allows us to make better software architecture. I will explain these sections in order to understand better this concept. This four section is the logical view, the development view, the process view and the physical view. The extra one is called: Use-Case View/Scenarios.

The Logical view talks about class diagrams, communication diagram, sequence diagram, state machine diagram, and an object diagram. All of these in order to obtain an object model, what components will be made and how will the behave. The development view is about, component diagram and package diagram, all to the make the organization of the assets during the development work, in other words, which belongs to what.

The process view is about concurrency and synchronized aspects. These mean activity diagram and timing diagram. The Physical view is how the software and the hardware are related, what system looks like when finished and it uses the deployment diagram. Finally, the use case view/scenarios use case diagrams and tell us how the system interacts with the world and systems around it.

In my opinion, these view model gets more cleared with the elephant and the blind programmers. They all get an idea of the elephant but no one gets the real point of an elephant. So, all of them are right, and that is why we nowadays build and have some different ideas or approaches to some things. In the end, we have not seen everything and in order to do that, we have to have the ability to see beyond what our senses can feel, and then, just by doing that we will begin to make better things.

Comentarios

Publicar un comentario

Entradas populares de este blog

An Introduction to Metaprogramming

It is impossible that after reading this article we can´t remember the Programming Languages class. That part of the course when we began to learn about metaprogramming also I remember that in the class’ book were pages that have the quote that said that if is not necessary to create a macro don’t do it or in my case don’t try to do it and this was because that topic is difficult to understand, this topic was not an intuitive knowledge, I think that you need to be a high level programmer in order to make this kind of code. This kind of code calls himself a program that generates other programs or program parts, yes, this sound a bit confusing. So, the professor Ariel Ortiz told us in the Programming Languages class that the people who recommend to don’t use metaprogramming only if it is very necessary are people that don’t know how to create macros and the potential that these tools have and, in the article, we can see reflected that hypothesis of the professor. Even he puts an exam
Leer más

Understanding the solid principles

This article talks about the SOLID principles which in fact as you known is an acronym that stands for five principles of object-oriented programming and design. Those principles allow us to avoid dependencies. So that means that the more things you depend on the greater the chance of something will go wrong. The principles are: Single Responsibility Principle, Open/Closed Principle, Liskov Substitution Principle, Interface Segregation Principle and Dependency Inversion Principle. I will talk about them quickly and explain why are they so important in our life as programmers. The single responsibility principle talks about that a class should have exactly one responsibility. That means that we have to have classes with a specific purpose and not mixed classes that if we erase something all the code went wrong or different. The open/closed principle talks about that a class should be open for extension but closed for modification. That means that we have to counter the tendency for
Leer más

Hidden Figures

In this post, I will discuss the movie that we saw in class: "Hidden Figures" directed by Theodore Melfi in 2016.    It's the second time I've seen Hidden Figures and I can say that it has become one of my favorite movies.  The film tells the story of three African-American women who worked for NASA in the early 1960s, collaborating in an important space program. These brilliant women achieved incredible goals that seemed impossible because they were women and African-Americans. What impresses me about these women is their intelligence, their strength, their perseverance and their struggle that allowed them to demonstrate that they were more than capable of being involved in areas that were considered suitable only for the masculine intellect, such as science, mathematics and engineering. I can identify a little with those great women of that movie, not because of how brilliant they were, but because, despite being in the 21st century, in my care
Leer más