NDLI: A systematic approach to relational database theory

Content Provider	ACM Digital Library
Author	Lipski, Witold Imielinski, Tomasz
Abstract	In an attempt to eliminate motivational inconsistencies, we propose a new approach to relational database theory. Basically, a database schema is treated as a relational view defined over certain atomic, selfexplainable relations, constituting what we call a conceptual schema. In this new framework, we revisit some basic notions of the relational database theory, such as dependencies and schema equivalence. We point out a fundamental difference between functional dependencies, which we treat as constraints over the conceptual schema, and multivalued and join dependencies, which we treat as constraints over the database schema, and which are simply consequences of the way database relations are constructed from conceptual relations. The separation of the database schema from the conceptual schema makes it possible to give a clear definition of a semantics of a database state. It also provides a natural framework to consider equivalence of database schemata.
Starting Page	8
Ending Page	14
Page Count	7
File Format	PDF
ISBN	0897910737
DOI	10.1145/582353.582356
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	1982-06-02
Publisher Place	New York
Access Restriction	Subscribed
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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A systematic approach to relational database theory