Which statement best distinguishes unstructured data from structured data?

• A. Unstructured data has a predefined structure
• B. Unstructured data is only text, while structured is numeric data
• C. Unstructured data has no predefined structure; Structured data is organized in a predefined format
• D. Unstructured data cannot be analyzed effectively

Answer: (C)

The main distinction being tested is whether data has a predefined structure. Unstructured data has no predefined structure, making it harder to fit into fixed tables without processing. Structured data, on the other hand, is organized in a predefined format or schema, such as rows and columns with defined data types, so it’s straightforward to query and analyze.

This is why the statement that unstructured data has no predefined structure and structured data is organized in a predefined format is the best fit. It captures the essential difference between how the data is modeled and stored.

Other options mischaracterize the data types: unstructured data is not limited to text and is not inherently devoid of analysis—advanced techniques like NLP and machine learning enable meaningful analysis of unstructured data. And unstructured data can indeed be analyzed, albeit often more complex or resource-intensive to process.