For this weeks blog we did several things, we watched a video about the 4+1 view model, we also watches a short video about six blind men which tried to identify and object (an elephant) and tell what it is, finally, the article we read was about more or less the same, but with software in mind instead of an elephant.
Starting with the 4+1 view model, the video started talking about uml diagrams, which I am a bit familiar since I’ve used them from the start of college until now to create a model of an Object Oriented system I’m about to code. It is helpful to get a general idea of what needs to be done and how. In this diagram, the programmer has to state every class and method is going to be used, also if there are environment variables, so that the only thing to do after that, is focus on the functionality of each method and how classes interact with each other. Also with the uml, the programmer could detect flaws in the model, which is a good thing because as we know, the earlier we detect flaws in development, the better.
The first model is the logical model, which contains all the diagrams and models we are going to use to start our project.
The second one is the development model, which is when developers start coding, choosing the correct programming language and the correct libraries.
The third one is the process view, which is about concurrency of the programs.
The fourth one is the physical model, which is how the software interact with the hardware its going to be used.
And finally, the +1 model is the use cases, namely, how the system interacts with the users, the input the users gave and the scenarios the software could be in.
The second video and the article are related, because they talk about people that don’t have all the scope information of something, so they start to construct their own opinion of that they think the software (or the elephant) is based on the information and the point of view they have.
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