Logics for Databases and Information Systems 124 an dem Kirchen- wie Profangeschichtler

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Logics for Databases and Information Systems 124 an dem Kirchen- wie ProfangeschichtlerTime is ubiquitous in information systems. Almost every enterprise faces the problem of its data becoming out of date. However, such data is often valu able, so it should be archived and some means to access it should be provided. Also, some data may be inherently historical, e. g., medical, cadastral, or ju dicial records. Temporal databases provide a uniform and systematic way of dealing with historical data. Many languages have been proposed for