Data Types Quiz

5 questions Pass: 70% +25 pts (50 with Pro)

Quiz covering Transform and Load the Data

What you'll be asked

  1. Which data type is most appropriate for storing a customer's phone number if you do not plan to perform mathematical calculations on it?
  2. You are importing a CSV file where a column represents currency values (e.g., $1,250.50). Which data type conversion is necessary to perform aggregate functions like SUM or AVG?
  3. During the 'Transform' stage, you encounter a date column formatted as 'DD-MM-YYYY'. Which action should you take to ensure compatibility with most database systems?
  4. What is the primary risk of using an 'Integer' data type for a column that contains values like '00123'?
  5. When loading data into a schema with strict typing, you have a column with mostly integers but a few 'N/A' strings. How do you handle this to prevent a load failure?

Answers and explanations come after you submit.