Data Engineering for Beginners freeCodeCamp

• What technologies will be used for batch processing and streaming data?

  Spark and Kafka
• Why is there a high failure rate in Big Data projects?

  Due to unreliable data infrastructures and quality
• What percentage of Big Data projects fail?

  85 to 87%
• What has been the expectation for data scientists regarding data infrastructure?

  To build out the necessary data infrastructure
• What is a consequence of incorrect data modeling?

  Redundant work for data scientists
• What is the average median salary for data engineers in the US?

  90 to 150k a year
• What crucial role do data engineers play in companies?

  Making data-driven decisions in AI and ML
• How do data engineers contribute to data quality?

  Ensuring data quality, security, and availability
• What is Docker?

  An open-source platform for containerization
• What does Docker simplify?

  Building, shipping, and running applications
• What is the purpose of containers in Docker?

  To package applications with dependencies
• What are the benefits of using containers?

  Lightweight, portable, and self-sufficient
• What is a Dockerfile?

  A text file with instructions for Docker
• What does a Docker image contain?

  Everything needed to run software
• What is the nature of Docker images?

  Read-only and immutable
• What is a Docker container?

  The runtime instance of a Docker image
• How are Docker containers isolated?

  They have their own file system
• What is the first step to get started with Docker?

  Install Docker on your machine
• What is Docker Compose?

  A tool for defining and running multi-container applications
• What is the purpose of the getting started guide in Docker?

  To help containerize an application
• What command is used to build a Docker image?

  Docker build -t
• What does the command 'docker run' do?

  Runs the image in a container
• What does the '-d' flag do in the 'docker run' command?

  Runs the container in the background
• What does the '-p' flag do in the 'docker run' command?

  Creates port mapping for the container
• What are the three main concepts of Docker?

  • Dockerfiles
  • Docker images
  • Docker containers
• What are the steps to create a Docker image from a Dockerfile?

  1. Write the Dockerfile with instructions
  2. Build the image using 'docker build -t'
  3. Run the image in a container using 'docker run'
• What are the benefits of using Docker in software development?

  • Simplifies application deployment
  • Ensures consistency across environments
  • Facilitates collaboration among developers
• What is the role of data engineers in AI and ML applications?

  • Ensure data quality and availability
  • Facilitate data-driven decision-making
  • Manage data processing and infrastructure
• What are the prerequisites for running Docker?

  • Docker Desktop
  • Docker Compose
• What is the significance of the Docker ecosystem?

  • Provides tools for containerization
  • Enhances application scalability and management
  • Supports development and production environments
• What is the importance of data quality in data engineering?

  • Affects decision-making processes
  • Influences the success of data projects
  • Ensures reliability of data-driven applications
• What are the challenges faced by data scientists in data engineering?

  • Building data infrastructure
  • Handling incorrect data modeling
  • Managing high turnover rates
• What is the impact of data engineers on business innovation?

  • Drive competitive advantage
  • Enable better insights and outcomes
  • Support data-driven strategies
• What is the role of Docker in ensuring application consistency?

  • Packages applications with dependencies
  • Provides isolated environments for testing
  • Facilitates deployment across different platforms
• What is the significance of the Dockerfile in the containerization process?

  • Contains instructions for building images
  • Defines the environment for the application
  • Ensures reproducibility of application setups
• How does Docker enhance collaboration among developers?

  • Provides consistent environments
  • Reduces "it works on my machine" issues
  • Simplifies sharing of applications
• What is the importance of the getting started guide in Docker?

  • Helps users learn containerization
  • Provides practical examples and instructions
  • Facilitates understanding of Docker concepts
• What are the key components of a Docker image?

  • Code
  • Runtime libraries
  • Environment variables
  • Configuration files
• What is the relationship between Dockerfiles, images, and containers?

  • Dockerfile creates Docker images
  • Docker images run as Docker containers
  • Containers are instances of images
• What are the steps to run a Docker container?

  1. Build the Docker image
  2. Use 'docker run' command
  3. Specify flags for background and port mapping