MY ZEN CLASS

  DATA BASE Backend deals with Server and Data Base CLOUD COMPUTING Cloud – Cloud Computing -- Rented Computer Service Ram, Processor, OS, Storage WHY WE PREFER CLOUD COMPUTING 1. Capital Investment (at initial stage renting is better than purchasing) 2. Maintenance Problem (Power Backup, Hard Disk, Upgrade) 3. Easily Swappable (Scale Up & Scale Down) (festival time ecommerce need extra storage and facilities after that it may need less, College websites during exam time (E.g)   Anna university website ,recent time – income tax website – pan card & aadhar card linking) 4.   Don’t need any separate place to keep those Systems. TOP COMPANIES AWS – Amazon Web Service - Netflix GCP – Google Cloud Platform Azure - Microsoft Azure WHY LINUX PREFERRED THAN OTHER OS Linux, Windows, Mac 1. Open Source 2.   Secure than Windows & Mac. 3. Command Line Usage In the Linux OS, the command line is a very handy and powerful tool used for...

  REACT React is a library in JS which helps to build UI. UI – User Interface is the space where human & machine interacts. Facebook - React   FRAMEWORK vs LIBRARY Framework – Pre build things are available u can just pick and place   them to create the app Library – U have to build from the scratch (reusable component) and   place it in your app. React Pre-requisite HTML,CSS,JS Wherever we need to handle large quantities of data, animations we can go with react Angular Pre-requisite HTML,CSS,JS,OOPS,TYPESCRIPT For enterprise structures we prefer to use angular (Admin, Mentor, Student for different users category we need to allow/block some particular modules(access) in that cases we can go with angular)     WHY REACT IS FASTER THAN JS React will create two virtual DOM which is similar to real DOM. After doing any changes in the node part of DOM it will compare with another virtual DOM and it update only the changes i...