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SYSTEM, METHOD, AND COMPUTER-READABLE MEDIUM FOR A LOCALITY-SENSITIVE NON-UNIQUE SECONDARY INDEX
SYSTEM, METHOD, AND COMPUTER-READABLE MEDIUM FOR A LOCALITY-SENSITIVE NON-UNIQUE SECONDARY INDEX
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机译:位置敏感的非唯一二级索引的系统,方法和计算机可读介质
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摘要
A system, method, and computer-readable medium for allocation of a Locality-sensitive Non-Unique Secondary Index are provided. The Locality-sensitive Non-Unique Secondary Index preserves the similarity of incorporated fields as well as improves the average secondary index sub-table look-up performance and is advantageously resilient to the type of predicates and workloads applied thereto. Rows of the secondary index having values of the columns that are hashed to determine a secondary index sub-table row location have a higher probability of being closely located within the secondary index than rows with more dissimilar column values that are hashed to determine the secondary index row location.
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