ITPEC FE Subject A October 2024 Question 56
Which of the following is a technique that can be used to discover useful information and relationships from large amounts of customer and market data retained by a company?
Explanation
Data mining — the technique that finds useful patterns and relationships in large volumes of accumulated data.
Data mining applies statistics, machine learning and pattern recognition to large stores of data such as sales and customer records, to uncover rules nobody set out to look for — for example, which products are bought together (association analysis) or which customers are likely to leave.
Answer (c)
Why not others:
- •(a) — a data dictionary records metadata, the names, meanings and formats of data items; it describes data rather than analysing it
- •(b) — a data flow diagram models how data moves between processes and data stores in a system; it is an analysis and design notation, not a way to discover knowledge in data
- •(d) — a data warehouse is the store that accumulates integrated historical data for analysis; data mining often runs on one, but the warehouse itself discovers nothing
Key rule: A data warehouse stores and data mining discovers: the warehouse is the source, mining is the technique applied to it.
System Strategy · AI-written, may contain errors
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