<ul><li>Before the rise of machine learning (ML), data science focused on traditional statistical analysis, manual data handling, data visualization, and predictive analytics without ML.</li><li>Data science before machine learning primarily used predefined models and rules to derive insights.</li><li>Structured datasets are well-organized and stored in a table-like format, typically in relational databases or spreadsheets.</li><li>Unstructured data refers to datasets that aren't stored in a structured format, including audio and video datasets.</li></ul>

Dataset Definition, Types, Benefits, and Use Cases

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