Recall & Review
beginner
What does the unique test check in dbt?
The unique test checks that all values in a column are different, with no duplicates.
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beginner
Explain the purpose of the not_null test in dbt.
The not_null test ensures that a column has no missing or NULL values, meaning every row has a value.
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beginner
What does the accepted_values test verify?
It checks that all values in a column are within a specific list of allowed values, like checking answers fit expected options.
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intermediate
Describe the relationships test in dbt.
The relationships test checks if values in one column match values in another table's column, ensuring data links are correct.
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beginner
Why are built-in tests important in dbt projects?
They help catch data problems early by automatically checking data quality rules, making data trustworthy and reliable.
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Which dbt test ensures no duplicate values in a column?
✗ Incorrect
The unique test checks that all values in a column are different, so no duplicates exist.
What does the not_null test check for?
✗ Incorrect
The not_null test ensures every row has a value, with no NULLs.
The accepted_values test is used to:
✗ Incorrect
Accepted_values test verifies that all values are from a predefined list.
Which test verifies that values in one table exist in another table?
✗ Incorrect
Relationships test checks if values in one column match values in another table.
Why use built-in tests in dbt?
✗ Incorrect
Built-in tests help catch data issues early by checking data quality rules automatically.
Describe the four main built-in tests in dbt and what each one checks.
Think about data quality rules like uniqueness, completeness, valid values, and correct links.
You got /4 concepts.
Explain why built-in tests are useful in managing data projects with dbt.
Consider how automatic checks help keep data clean and reliable.
You got /4 concepts.