Table 3.9: Probabilistic
Customer relation (tuple-level uncertainty)
CustomerLoc relation (attribute-level uncertainty), where N(μ, 𝜎2) is normal distribution with probabilistic density function μ is mean and 𝜎2 is variance.
The probability of each possible world can be computed by multiplying its tuples’ probabilities.
Besides tuple-wise uncertainty, attribute-level uncertainty (e.g., Location attribute in the CustomerLoc relation in Table 3.9(b)) ...