Practice questions and their answers
Let’s try to practice the material in this chapter with a few example questions.
Questions
- A smart thermometer collects information about the temperature outside every 30 minutes, creates a log, and sends the data to a local database. What can you tell about the database?
- It is structured
- It is unstructured
- It is relational
- There is not enough information
- Client-facing agents at banks are not technical experts, but require the ability to query client information. Which data schema is most appropriate for their database?
- Star schema
- Snowflake schema
- Galaxy schema
- Avalanche schema
- You are working as a data scientist for a video-streaming website. You require access to raw, unprocessed data and video files. What is the most appropriate database style to use?
- Data warehouse
- Data mart
- Data lake
- Data mine
- An e-commerce website has been collecting information on purchases for over a year. Now, they want more detailed geographical information...