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Logical Data Rase Design Principles for Codasyl Data Base Management Systems
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The structure of data to be stored by a Data Base Management System (DBMS) is usually decided by a database administrator. Individual users and applications are generally interested in only a subset of the data stored in the database. Often, they wish to see this subset structured in a way which reflects their particular needs. Since it is not generally possible to structure a database so as to...
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Time is essential in modeling the constantly changing world. However, conventional database systems represent the real world with only a tenseless snapshot that is inadequate for many applications where facts and data need to be interpreted in the context of time. In this work we examine some of the issues applicable to temporal modeling, including examples which illustrate the demands imposed ...
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ژورنال
عنوان ژورنال: ACM Computing Surveys
سال: 1976
ISSN: 0360-0300,1557-7341
DOI: 10.1145/356662.356666