AWS- Basics

Cloud: Region, AZ, Data CentersServer: AMI, EC2Storage: S3, EBS, EFSSecurity: Security Groups, Network ACL, IAMNetwork: ELB, VPCAmazon Lightsail https://aws.amazon.com/about-aws/global-infrastructure/?p=ngi&loc=1 Cloud: What is Cloud? Cloud is on-demand delivery of IT related resources over the internet with affordable pricing options. Cloud providers maintain these data centers and provide services over the internet hence It is no longer …

AWS- ML Basics

What is Cloud? Cloud is on-demand delivery of IT related resources over the internet with affordable pricing options. It is no longer required to manage and maintain own hardware and servers. Cloud providers maintain these data centers and provide services over the internet. Create new AWS account: https://aws.amazon.com/premiumsupport/knowledge-center/create-and-activate-aws-account/ What is Machine Learning (ML) ML is …

API (Application Programming Interface)

API is a acronym for Application Programming Interface. It is set of protocols, routines and tools for building a software application. It specifies how one software program interact with another software programs. companies will create set of API's, create their documentations and share it on their websites. The user will integrate these API's as per …

XPath and cssSelectors

What is xpath? It is a technique to navigate through the HTML structure of path. In simple terms, It is a location of any element of a webpage. Types of XPath? Absolute xpathRelative xpath Relative xpath : does not depend on parent nodes (starts with // ) – recommended to use. Absolute xpath : Complete …

let’s ‘JOIN’ in SQL

Joins : Retrieving data from two or more tables having common columns (primary-foreign key) Types of Joins: Equi join / Inner Join / Natural Join (most frequently used) In-equi join (use for exception reports) Outer join (Full outer join, left outer join, right outer join) Cartesian join/ cross join (fastest join - as no 'WHERE' …

diagrams.net (previously draw.io) – tips

https://www.diagrams.net/ shortcuts: 'https://app.diagrams.net/shortcuts.svg How to create venn diagram using draw.io https://graphicdesign.stackexchange.com/a/148021/164048 In the shape library, under basic shape, select pointed oval. Now make the Grids disable using shortcut ctrl+Shift+G OR using the menu option (View > grids ). Now Draw two circles and adjust the pointed oval to cover the intersection area. Right click on pointed oval shape, select option 'TO FRONT'. This will …