The study of information as proposed in information theory provides a useful tool for studying many aspects of information systems, libraries, and archives. How does a calculator that computes information-theoretic functions contribute to students learning database ideas such as the relationships between various attributes, or columns in a relational database? Understanding the relationships between variables in a professional discipline can be viewed as the core of the discipline, and these information measures are very important to the study of the organization of information. A web-based information-theoretic calculator is examined that enables students to easily and completely process various information-theoretic calculations that are useful in studying database relationships. Students were questioned after using the calculator on a homework assignment. The students’ evaluations of this form of calculator were then examined, and lastly, recommendations about using information-theoretic calculators are suggested. Recommendations are made about the use of this form of calculator in a range of academic disciplines, from computer science and business, to library and information sciences. These recommendations apply to both the academy and professional practice applications in informational domains.
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