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Relational Data Model

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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...
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Frameworks vs Libraries vs Services

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Framework, libraries and services are usually overlapped. In this blog post we'll see how are these things different from one another. First let's have a look at framework .. Let's tokenize this word. Framework is composed of two terms. one is frame and second is work. Frame is anything that you can put something into . Like a photo frame, you have some sort of skeleton in which you can put your photo. but the most important thing is that your photo must be of the size of the frame. If this isn't the case then you might need to buy some other frame or you might need to cut your photo from the borders, or the bottom or the sides or from anywhere. (in order to fit it into the frame) The second word is "work" what does work mean... Well according to Physics you are only doing work if and only if some force is applied and you cover displacement in the direction of applied force. But this is not the case with this work word. Here the work is nothing ...
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Organization Tips for Freshers

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Before going into the university or College we used to think that we will manage our university work along with our household work like a pro. But after just two to three days we start losing motivation and the panic sets in.  In this blog post, we will see how could we remain organized in the freshman year of our university. Here I am focusing on the freshman year because if you start in an organized manner then there are higher chances for you to continue being well organized in the years to come. so without further ado, let's get started... TIP#1: Backpack Preparation The most important thing that you will carry with you is your backpack. It must be organized in a way that makes your work easier. So, first of all, try to have a bag in which you can put a laptop, notebooks, and other essential things. Try to put less but necessary items in your bag. TIP#2:  Mobile Management You will probably gonna use a mobile phone at the university. Check the following ite...
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Data Modeling

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source: https://searchdatamanagement.techtarget.com/definition/data-modeling A wise person once said a picture is worth a thousand words . In real-world data is not just a few rows of excel sheet, yet it comprises several billion rows expanded through hundreds  of tables. A table is usually made up of rows and columns. Each table represents an Entity . Entity means an Object or thing. That Entity has several properties called Attributes . Those attributes represent the qualities or characteristics of the entity. Since there is more than one entity, so there should be a Relationship between those entities. If we look at the tables we cannot get a clear idea of the relationship between several tables/Entities. Hence, we need to represent the tables/data in the form of a picture or a flow graph. That flow graph or Entity-Relationship diagram is called a Data Model .  Data Modeling is a technique to represent how the tables are related to each other and to represent the s...
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Think Like a Programmer

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How? Read this book Why? Because you are to become a software engineer and programming is the basic need, the food for thought of a software engineer especially a programmer software engineer... But... This is too long So what? You have to read it! May be it contains something that is beneficial to you..
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Web Scraping : Urdu News

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Web scraping is an amazing method to collect data. Many data scientist use this method. I have scrape Urdu news . Urdu is difficult to scrape but thanks to Python and its libraries. Have a look at the code and outputs below:
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Pizza For Free

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This is the first version of my code, you can modify it for improvement. I am sharing this code so that you can think about making different kinds of softwares. # -*- coding: utf-8 -*- print("|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||") print("") print("\t\t\t\t\t\t WELCOME TO FREE PIZZA MAKER >>> NO MONEY PIZZA") print("\t\t\t\t\t\t\t WE BAKE, YOU TAKE") print(" ") print("|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||") orderCount = 0 def pizzaTypesAndSize(orderCount, counterListForPizzaType, counterListForPizzaSize, typeList, sizeList): listComb = [] while(orderCount < 5): #for pizza type print("Please Select the Pizza Type:") countT = 0 for i in (typeList): countT +=1 print(i) print("-----------------------------------------------------...
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Relational DB, ORM and ERP systems

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When something is getting obsolete, we usually use to say it in Urdu as: Translation:That time has gone... With each passing second data is increasing and to make efficient use of that data we need to store it in some structured form. In past almost all the enterprises used to store data, in rows and columns on paper; like for attendance of staff members, there was a register in which name and corresponding status of attendance is marked. Bills, payment status, resource planning, human resource management, everything was (just) on papers. so yeah, that time has almost gone; when people used to store a lot of data on papers and in files.  Image Source But then technology grew up and paperwork is shifted on digital world. (But, there are still many companies relaying on paper work more than on computers!). So as mentioned above, the problem is; data is expanding. We need to deal with it, we need to manage it properly.  According to Quickbase article on datab...
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3rd Semester : For Software Engineering Students

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One of my juniors, who is about to start her 3rd semester, asked me for some course related videos. I sent her an email. I also want to share that with you. You may find it beneficial. so, here you go... PROBABILITY AND STATISTICS: Video Link:   www.youtube.com/watch? v=kT0865hL1dU&index=12&list= PLJ- ma5dJyAqpSrUIGDy8oT39HjUbLoM2t Video Link:  www.youtube.com/watch? v=9FtHB7V14Fo&list= PL5102DFDC6790F3D0 Video Link:  www.youtube.com/watch? v=Edye4T_lSDE&list= PLauXkHsTK5c8FTwwkzQydT7heXIgp QRN8 Video Link:  www.youtube.com/watch? v=CilB_9ZanpA&list= PLC8478000586FA6F9&t=17 DATA STRUCTURE AND ALGORITHMS: Video Link:  www.youtube.com/watch? v=3fwKlU9AwSY&list= PLfVsf4Bjg79Cu5MYkyJ- u4SyQmMhFeC1C&t=2 Website Link:  www.geeksforgeeks.org/ data-structure-gq/linked-list- gq/ Video Link:  www.youtube.com/watch? v=JTttg85xsbo&index=3&list= PL2_ aWCzGMAwLZp6LMUKI3cc7pgGsa...
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