DATABASE FUNDAMENTALS
DATA WAREHOUSING AND DATA MINING
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A set of databases from different vendors possibly using different database paradigms
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An approach to a problem that is not guaranteed to work but performs well in most cases
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Information that is hidden in a database and that cannot be recovered by a simple SQL query.
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None of these
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Detailed explanation-1: -A heuristic, or heuristic technique, is an approach to problem-solving that uses a practical method or various shortcuts in order to produce solutions that may not be optimal but are sufficient given a limited timeframe or deadline.
Detailed explanation-2: -A heuristic is a mental shortcut commonly used to simplify problems and avoid cognitive overload. Heuristics are part of how the human brain evolved and is wired, allowing individuals to quickly reach reasonable conclusions or solutions to complex problems.
Detailed explanation-3: -Answer-C) Data transformation is not involved in data mining.
Detailed explanation-4: -Explanation: Hamming distance is a metric for comparing two binary data strings i.e, suitable for categorical variables.