What Information Is Available from a Relational Database Containing One

question 21

Essay

What information is available from a relational database containing one relation with the attributes Name,Employee identification number,and Address that is not available from a database containing two relations,one with attributes Name and Address and the other with attributes Address and Employee identification number? Explain your answer.

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Definitions:

Sample Observations

Data points collected from a subset of a population for analysis or research.

Probability

The measure of the likelihood that an event will occur, represented as a number between 0 and 1, where 0 indicates impossibility and 1 indicates certainty.

Sample Mean

The average of all the data points in a sample, used as an estimate of the population mean.

French Reluctance

The tendency of France to be hesitant or resistant in certain situations, often in historical contexts involving military or political decisions.