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- W2057921877 abstract "Nowadays the use of solid state drives (SSDs) is a reality for storing large databases. SSDs are capable to provide IOPS rates up to three orders of magnitude greater than the rates delivered by hard disk drives (HDD). Nonetheless, SSDs presents time asymmetry for executing read/write operations, which poses challenges on the database technology. This is because existing database management systems (DBMS) have been designed by assuming that databases are stored on devices, in which read/write operations are executed in the same amount of time. Thus, we claim that to take full profit from SSD properties, components of DBMS should be aware of read/write asymmetry in SSDs. It is well known that the join operation is the query operator which requires the highest amount of accesses (read/write operations) to the secondary memory. In this paper, we present a new join algorithm, called Bt-Join. The key goal of Bt-Join is to reduce the amount of write operations during the execution of any join operation R ⋈ S. We have empirically evaluated Bt-Join. The results show that the proposed join operator can be up to 50% faster than FlashJoin, a well-known join operator proposed to be deployed in SSDs." @default.
- W2057921877 created "2016-06-24" @default.
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- W2057921877 date "2015-04-13" @default.
- W2057921877 modified "2023-09-28" @default.
- W2057921877 title "Bt-Join" @default.
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- W2057921877 doi "https://doi.org/10.1145/2695664.2695785" @default.
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