MCJoin: A Memory-Constrained Join for Column-Store Main-Memory Databases

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Provided by: Association for Computing Machinery
Topic: Storage
Format: PDF
There exists a need for high performance, read-only main memory database systems for OLAP-style application scenarios. Most of the existing works in this area are centered around the domain of column-store databases, which are particularly well suited to OLAP-style scenarios and have been shown to overcome the memory bottleneck issues that have been found to hinder the more traditional row-store database systems. One of the main database operations these systems are focused on optimizing is the JOIN operation. However, all these existing systems use join algorithms that are designed with the unrealistic assumption that there is unlimited temporary memory available to perform the join.
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