Time Granularities in Databases, Data Mining, and Temporal Reasoning by Claudio Bettini, Sushil Jajodia, Sean Wang.
Calendar units, such as months and days, clock units, such as hours and seconds, and specialized units, such as business days and academic years, play a major role in a wide range of information system applications. System support for reasoning about these units, called granularities in this book, i...
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