A relational model of data for large shared data banks
Communications of the ACM
SIGMOD '78 Proceedings of the 1978 ACM SIGMOD international conference on management of data
Extending the data base relational model to capture more meaning
SIGMOD '79 Proceedings of the 1979 ACM SIGMOD international conference on Management of data
Principles of Database Conceptual Design
Proceedings of the NYU Symposium on Data Base Design Techniques I: Requirements and Logical Structures
Optical mass storage technology
CAW '80 Proceedings of the fifth workshop on Computer architecture for non-numeric processing
Functional parallelism in an operand state saving computer
CAW '78 Proceedings of the fourth workshop on Computer architecture for non-numeric processing
Implementing atomic actions on decentralized data (Extended Abstract)
SOSP '79 Proceedings of the seventh ACM symposium on Operating systems principles
A programming language model for an operand state saving computer.
A programming language model for an operand state saving computer.
OOPLSA '86 Conference proceedings on Object-oriented programming systems, languages and applications
Optical mass storage technology
CAW '80 Proceedings of the fifth workshop on Computer architecture for non-numeric processing
Adding database management to Ada
ACM SIGMOD Record
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This paper investigates how database systems would be designed and used under the limiting-case assumption that mass storage is free. It is argued that free mass storage would free database systems from the limitations and problems caused by conventional deletion techniques. A non-deletion strategy would significantly simplify database systems and their operation, as well as increase their functionality and availability. Consideration of this limiting case helps shed light on a more realistic argument: if the cost of mass storage were low enough, then deletion would become undesirable. It is also argued that the often labor-intensive costs and time delays involved in archival and retrieval of older data can be minimized if a single technology were available with low-cost on-line storage and a low-cost archival media with long shelf life. Optical discs promise to come one to two orders of magnitude closer to the limiting case of free mass storage than ever before. Other features of optical discs include improved reliability and a single technology for both on-line and archival storage with a long shelf life. Because of these features and because of (not in spite of) their non-deletion limitation, it is argued that optical discs fit the requirements of database systems better than magnetic discs and tapes.