Describe How Data Stored in a Relational Model Is Retrieved

question 96

Essay

Describe how data stored in a relational model is retrieved from tables.

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Definitions:

Population

The entire group of individuals or instances about whom the research is focused.

Sampling Error

The difference between a statistic derived from a sample and the corresponding statistic of the entire population, due to chance variation in selecting the sample.

Population

The entire group of individuals or items that a researcher or statistician is interested in studying.

Representative Sample

A fraction of the population that truly represents the attributes of the entire group.