Key Terms

Key Terms

Android Studio

official IDE for Android development

Asynchronous JavaScript and XML (AJAX)

exchanges small amounts of data between a client and server

cascading style sheets (CSS)

standard style sheet language used to alter the presentation style of the web data content found in HTML

decentralized Apps (DApps)

applications that execute smart contracts and run over distributed ledger technology

Django project

high-level directory used to contain the directories and files necessary to run a Django web application

Ethereum blockchain

creates a secure peer-to-peer network through the use of smart contracts

Firebase

app development platform and a collection of services for authenticating users, integrating ads, running A/B tests, and more

full node

computer that maintains a copy of the blockchain and runs blockchain software

gas price

cost of validating transactions and updating ledgers

GraphQL

open-source query and manipulation language

hypertext markup language (HTML)

standard markup language used to describe the structure and content of web data

JavaScript (JS)

scripting language that adds interactivity to web content and server-side functionality

JavaScript Object Notation (JSON)

file format that represents data as text-based attribute-value information

Jetpack Compose

toolkit for building native user interfaces

loose coupling

component in a software system that has a weak association with the other components

Metro bundler

bundles the JavaScript code that is deployed on the mobile device or emulator when the React Native front-end application is successfully created

Moore’s law

states that the number of transistors on an integrated circuit doubles roughly every two years

Node

JavaScript runtime environment that provides users with the tools to develop web applications, as well as servers, scripts, and command-line tools

non-fungible token (NFT)

unique digital identifier on a blockchain

optimistic rollup

protocol that increases transaction output by bundling multiple transactions into batches, which are processed off-chain

peer-to-peer (P2P) network

one in which devices connect and can share data and processing without needing a centralized server

Postman

API platform testing tool that can be used as a client

React

JavaScript library popular to build user interfaces

React Native

open-source JavaScript framework used to build native applications for mobile devices

Semantic Web

system of autonomous agents, which are software programs that respond to events

serializer

tool to control response outputs and convert complex data into content, such as JSON

sidechain

secondary blockchain that aggregates blocks back to the main blockchain

Solidity

high-level, object-oriented language focused on the implementation of smart contracts

stateful application

software and system that maintains the state of an application over time

stateless application

state is not maintained by the system and previous actions do not impact future ones

Truffle Framework

popular suite of tools used to develop smart contracts

View

presentation layer that handles the user interface

Web 1.0

phase of the Web where the user’s interaction was limited primarily to reading and selecting web pages

web page

document commonly written in HTML and viewed in a browser

web publishing

also called online publishing; is for publishing content on the Web

web server

software application that runs at a known URL and responds to HTTP requests

World Wide Web (the Web)

started as a way to link content (primarily text and images) stored on different servers or machines

Xcode

Apple’s IDE that enables application development for Apple’s platforms

zero-knowledge rollup (zk-rollup)

protocol that bundles transactions into batches that are executed off the mainnet