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Relational Data Model
In the previous blog post, we covered Data Modeling. We have seen that data modeling is really important before jumping into predictive modeling. In this article, we will cover the Relational Data Model (RDM). Let's start from the very basics, relational means anything which is linked with some other thing. This link is called "Relationship". In RDM or RM there are major three types of relationship cardinalities (also called Multiplicities or Cardianalities): 1. One to one 2. One to many 3. Many to many We can understand these with the help of a few simple examples; One to one: One department has one manager. One to many: One class has many students. Many to many: Many teachers can teach many students. Okay, so we have got an abstract overview of the term " Relational ", now the next thing is " Data ", data covers everything, anything... And finally, " Model " means something in the form of a template, design, a kind of blueprint. To store...
Ethical Dilemma : Software One
Consider a situation : You are a software engineer. And you can write any kind of code, from one extreme to another. From the code of virtue to the code of disaster. You are working in the international level, world famous and the top most software company. Your Monthly salary is more than the salary of every officer in the world. Means: You are living a luxurious life, you are healthy, wealthy and wise. You have no tension, no problem in your life. You are living near to perfect life. Turning Point: One day while you are sitting in your office, the CEO of company calls you. You go to his office, he offers a cup of your favorite coffee to you. He then asks you: "Mr. Ali, as you know, you are the most prominent programmers of the world. You are capable of writing every kind of code. Our company depends a lot on you. So, would you give me some favor?" You say: "Do ask, Sir." CEO : "As you can you see that, " The Presoftioza Company ...
Bitcoins
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Pintos : Series : Part 1 : Installation
PintOS is an Operating system, but this is not a complete OS. There are many kernel level functions implemented but we need to modify it to implement it correctly. So, if you are taking OS course or interested in Operating Systems then you can follow my PintOS Series. As installation of PintOS is the most important and tedious task, so we need to do it first! Actually I have learnt about the installation steps from various sites, I will share their links side by side. What I grasped from there, I will compose it into this post. I know you might be thinking if the installation steps are already available on-line, then why am I writing them for you? The reason for this is that, when I installed PintOS, I found a lot of problems initially but then it worked. So, what I understood from my experience and from the sites, I will share that. I believe that if learning is done through mutual cooperation, then this will benefit everyone . So, let's learn together.... First Mist...
Harry Potter's Resume
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Think Like a Programmer
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Github : Part 1 : Introduction
Have you ever gone through the problem of version control while working on some coding project in a group? Did you find it difficult to share code with each member of a group? Yes? Then this blog post is for you... Problem.. Back in days, people used to write code but they found it difficult to share and control the progress of their code in contact with each other. Say You are in Pakistan while your friend is in New York and both of you are working on some project involving coding and programming. With time to time you need to send some portion of your code to your friend to test it for further progress. After completion of your project you need to send the whole source code to your supervisor living in India. You are using email and Google drive for sending source codes, but this is not feasible but tedious as your friend need to download it then by modifying it on his own computer, send it back to you. This wastes a lot of time and is prone to errors. Solutio...
Probability And Statistics For Engineers
Billy Graham said: " We are not cisterns, made for hoarding. We are channels made for sharing. " So I am passing "Probability And Statistics For Engineers by R.A Johnson" to you. As I got this from someone else, to whom I am very thankful. In this book the concepts of the subject are explained very well, I hope you will find this book, helpful and beneficial. There are certain distorted page images, but you can still get it (Insha' Allah!) and, here you go...
How to take notes in Freshman Year ?
Yes, you have to take notes in the university class! Before talking about the notetaking strategy, we will understand the importance of taking notes. Importance Of Taking Notes No doubt there are a few students who can produce good results without even taking notes in the class. But their number is least. Most of us need to make good notes in the class especially when we are in university. Notes are important because: They help us to keep track of what we have studied in the whole semester. Notes help us to prepare for the exams, in a very short time. We can refer to our notes for short quizzes in the eleventh hour. In addition to reading and listening, writing notes increases the ability to memorize the important concepts. It helps you to realize that you have done something in the class. Now that we have understood Why to take notes? Let's dig into the notetaking strategy Notes taking Strategies One of my friends Ramlah Aamir Aziz used to take...
ReplyDeleteI am a constant reader of blogs. I have read this whole blog and it is an amazing blog for developers who are dealing daily with the new challenges and tasks.
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