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Dev.to
7/11/2026
The original title is "A Beginner's Guide to Understanding Data: Beyond the Textbook Definition"

The original title is "A Beginner's Guide to Understanding Data: Beyond the Textbook Definition"

Original: Data Isn't What Your Textbook Said It Was

Short summary

A beginner-friendly explainer that redefines data as traces of real-world events rather than textbook 'raw facts.' Covers dirty data with phone-number formatting examples, the data pipeline from recording to decision-making, and structured vs unstructured vs semi-structured data. Uses Indian app examples like Swiggy and WhatsApp but offers no AI-specific content.

  • •Data redefined as traces of events, not textbook 'raw facts'
  • •Dirty data and cleaning explained with practical phone-number examples
  • •Structured, unstructured, and semi-structured data types introduced for beginners

Generated with AI, which can make mistakes.

#certification-education
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