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Empirical studies have been undertaken to measure the ease-of-use of a query language, compare two or more such languages for ease-of-use, study controversial issues in query language design, and provide feedback to designers for improving a language. Some primitive attempts at constructing abstract models related to query languages also exist. This paper discusses some of the techniques that have been used and results obtained. A primary goal is to show the reader unfamiliar with behavioral research what the results do and do not mean.

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