salesforce knowledge

Lightning Flow:- Lightning Flow is a product it mainly deals with managing, building,running processes flows. Flow:- Flow is  an application that automates a  business process by collecting data and do something in your S alesforce org or external system. Flow Builder:- Flow Builder is a point-and-click tool for building flows.   Lightning Flow Builder :-     lightning flow builder is a tool which allows you to automate business process  by building application known as Flows and flows can be used to create, update collect, delete information in salesforce. Flows can also execute logic and  interact with salesforce data, call apex class and guide users through screens for collecting and updating data. Flows in salesforce can implemented   by thses following ways:- 1. Screen Flow:-       I n this type of flow  a series of screen elements gather information        from the user and perform some operations. Screen flow can be    accessed from custom button, custom link, Visual pages etc.T

 PubSub design pattern:-    Pubsub is a singleon library(Java Script file)  that follows publish subscribe pattern.  If componets  which are not situated in the same DOM  tree wants to communicate                 between   themselves, we have  to  use   publish subscriber   model in Lightning Web     Component.   Pub-sub is like Application Event in Lightning Aura Component.  In a  publish-subscribe pattern one component  publishes an event while the other components  subscribe to receive and handle  the event. Every component that subscribe  to the event  receive the event. NOTE .  Publish-Subscribe  Model only works for components that are on the same page