External Data Integration for Decision-Making (IS)
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What it is
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the principle that comprehensive IS analysis cannot rely on internal data alone — strategic decisions, especially at the Decision Support System (DSS) and Executive Information System (EIS) levels, depend heavily on external data sources and integration with third-party applications
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Worked example
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a middle manager may only need a daily total-sales report from an internal POS machine; a senior executive, deciding whether to launch a new product line or close an underperforming branch, needs social media sentiment analysis (external) combined with that same POS data
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Implication for analysis/modeling
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identifying external data sources and relevant third-party apps is a crucial step in modeling real-world business problem solving, not an optional add-on
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