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Analyzing Functional Dependencies and Decomposition in Kwatts Database

This analysis focuses on the Kwatts relation, which includes attributes such as Dorm, Floor#, Date, Time, Temp, Humidity, Occupancy, Weekday?, and SensorID. We will identify a minimal set of functional dependencies (FDs), determine all possible keys of the relation, and explore the possibility of a dependency-preserving decomposition into BCNF tables. The functional dependencies highlight the relationships among attributes, providing insight into occupancy patterns, environmental variables, and sensor information in the given dataset.

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Analyzing Functional Dependencies and Decomposition in Kwatts Database

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  1. In class exercises Consider the relation Kwatts, Dorm, Floor#, Date, Time, Temp, Humidity, Occupancy, Weekday?, SensorID and FDs that are asserted as true of the relation 1) Dorm, Floor#  Occupancy 2) Date, Time  Temp, Humidity 3) Date  Weekday? 4) SensorID, Date, Time, Temp  Kwatts 5) Dorm, Floor#, Date, Time, Temp  Kwatts 6) SensorId  Dorm, Floor# 7) Dorm, Floor#  SensorId a) Give a minimal FD set. If there is more than one such set, just give one of them. b) Give all keys for the relation

  2. c) Give a dependency-preserving decomposition of the relation into BCNF tables. If the relation is already in BCNF then state so. If there is no dependency-preserving decomposition into BCNF tables then state so.

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