What is a data schema and why enforce it on ingestion?
This tests your understanding of data contracts. A great answer defines a schema as a data blueprint, then explains how early enforcement prevents bad data, ensuring consistency and reliability for analytics. A red flag is only defining the term.
This tests your grasp of proactive data quality management. A strong answer defines a schema as a data blueprint, then explains how enforcement on ingestion acts as a quality gate. This ensures data conforms to expected types and constraints, preventing corruption and simplifying downstream processing. It builds trust in analytics by stopping bad data at the source. A red flag is vaguely mentioning 'better data' without explaining the specific mechanisms and consequences of failure.
Read the original → Wikipedia: Database schema
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