ACCA Applied Knowledge · Business and Technology · The impact of advances in technology
Which of the following is an example of unstructured data used in big data analysis?
Free-text customer reviews on social media are unstructured data because they have no predefined format or fields. Invoice tables, payroll spreadsheets and relational inventory databases are structured, as they are held in organised rows and columns with fixed fields.
- AA table of invoices with fixed fields for date, customer and amount
- BA spreadsheet of monthly payroll figures
- CCustomer reviews posted as free text on a social media siteCorrect
- DA relational database of inventory codes and quantities
Explanation
Unstructured data has no predefined format or data model; free-text reviews are a typical example. Invoice tables, payroll spreadsheets and relational inventory databases are all organised in fixed fields and so are structured data.
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