QuickDataScience | Quick & Easy Data Science

  What is SQL? Structured Query Language is also known as SQL is the database language and is one of the most famous and in-demand technology.  This language was specially developed for database management i.e. creating a database, inserting and updating records in them, managing accesses and retrieving data from it. SQL is mostly used for Relational Database Management Systems.  Its demand is increasing every single day. As there is an increase in data, demand and need for SQL increases. It is been used by web developers, data analysts, data engineers, and in every other field where we need to store and retrieve data.  One of the main reasons why SQL is gaining popularity is that it is simple, easy, quick, and powerful. Another reason is that the most commonly used version of SQL(MySQL) is open-source(FREE) Another great feature of  SQL is Non Procedural language(explained in the next section). 

EDA EDA - Exploratory Data Analysis is the technique of defining, analyzing and investigate the dataset. This technique is used by most data scientists, engineers and everyone who is related to or wants to work and analyze the data. Saying that, it includes the whole majority of us as at any point of time we are dealing with data and we un-knowingly do an initial analysis about which in technical terms is referred to as   "Exploratory Data Analysis". Here is a formal definition of the EDA:-  In statistics, exploratory data analysis is an approach to analyzing data sets to summarize their main characteristics, often using statistical graphics and other data visualization methods.  Still confused about how every one of using this process..!! Let me explain it with a simple example... Suppose you and your group plan for lunch in a restaurant... as soon as we hear "lunch" and "restaurant" our mind starts creating a list of all the known places, next as someon

 An easy to go guide for installing the Spark in Windows 10. Image taken from Google images 1. Prerequisites Hardware Requirement * RAM — Min. 8GB, if you have SSD in your system then 4GB RAM would also work. * CPU — Min. Quad-core, with at least 1.80GHz JRE 1.8   —   Offline installer for JRE  Java Development Kit — 1.8   A Software for Un-Zipping like   7Zip   or   Win Rar * I will be using 64-bit windows for the process, please check and download the version supported by your system x86 or x64 for all the software. Hadoop * I am using Hadoop-2.9.2, you can also use any other STABLE version for Hadoop.  * If you don’t have Hadoop, you can refer to installing it from   Hadoop: How to install in 5 Steps in Windows 10 . MySQL Query Browser Download Spark Zip * I am using Spark 3.1.1, you can also use any other STABLE version for Spark. * Latest release of Spark is 3.1.2(shown in the image below) released in June'21 Fig 1:- Download Spark-3.1.2

  An easy to go guide for installing SQOOP in Windows 10. Image taken from Google images 1. Prerequisites Hardware Requirement * RAM — Min. 8GB, if you have SSD in your system then 4GB RAM would also work. * CPU — Min. Quad-core, with at least 1.80GHz JRE 1.8   — Offline installer for JRE  Java Development Kit — 1.8   A Software for Un-Zipping like   7Zip   or   Win Rar * I will be using 64-bit windows for the process, please check and download the version supported by your system x86 or x64 for all the software. Hadoop * I am using Hadoop-2.9.2, you can also use any other STABLE version for Hadoop.  * If you don’t have Hadoop, you can refer to installing it from   Hadoop: How to install in 5 Steps in Windows 10 . MySQL Query Browser Download SQOOP zip * I am using SQOOP-1.4.7, you can also use any other STABLE version for SQOOP. Fig 1:- Download Sqoop 1.4.7