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- W2433458077 abstract "This research addresses the problem of designing a Special Purpose Function Architecture for Some Relational Algebra Operations, namely, Select, Project, and The review of previous work on the related areas and a discussion on Special Purpose Function Architectures motivates the problem addressed by this research.While studying the Join process, it was observed that under certain conditions a Join operation is not able to reconstitute the parent relation. Such a Join operation is defined as a Join. A hardware mechanism based on an Associative Array Processor is introduced to detect faulty Join cases.The proposed system, a Special Purpose Function Architecture for Some Relational Algebra Operations (SPFA-RAO) executes three operations (Select, Project, and Join). When these operations are encountered by the General Purpose Computer (GPC), the GPC transfers the necessary information to the SPFA-RAO for their execution.The architecture of the SPFA-RAO consists of an Input Buffer, an Associative Array Processor with multiple comparand registers, and a Results Buffer. When considered with the Join Filtering Device, the SPFA-RAO has the capability of marking the potentially faulty tuples. The SPFA-RAO is also capable of performing generalized ((theta)) and full Joins.Timing equations are developed to evaluate the design parameters of the SPFA-RAO and to compare its performance with the GPC and other data base machines that support the same relational algebra operations. It was shown that the SPFA-RAO is capable of performing Select-Project-Join type of queries at the speed of the secondary storage devices. When compared to the GPC, the SPFA-RAO is five to twenty four times faster; as compared to the other data base machine designs, the SPFA-RAO is found to be compatible." @default.
- W2433458077 created "2016-06-24" @default.
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- W2433458077 date "1981-01-01" @default.
- W2433458077 modified "2023-09-26" @default.
- W2433458077 title "Spfa-rao, a special purpose function architecture for some relational algebra operations" @default.
- W2433458077 hasPublicationYear "1981" @default.
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