CS Professional · Artificial Intelligence, Data Analytics and Cyber Security - Laws and Practice · Data Analytics and Law
Which of the following is an example of unstructured data in a big data environment?
Recorded call audio and free-text emails are unstructured data because they do not follow a predefined tabular schema. Relational tables, spreadsheets of totals and transaction databases are structured data with fixed fields that can be queried directly.
- AA customer table with fixed columns for name, PAN and city in a relational database
- BA spreadsheet of monthly invoice totals
- CRecorded customer-care call audio files and free-text emailsCorrect
- DA database of transaction IDs and amounts
Explanation
Unstructured data has no predefined schema or tabular form; audio recordings and free-text emails fit this. Relational tables, spreadsheets with fixed columns and transaction databases are structured data.
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