Query optimization is a very complex task for commercial databases in case of performance
issue that needs to be well known of entire structure of database. In desktop or web …

Over the last few decades, much research has been devoted to designing and evaluating
efficient join algorithms. The focus of this paper is a comparison of the two fastest join …

Traditional join algorithms can be categorized into three groups: hash-based join, sort-
merge join, and nested-loop join. Many variations of these algorithms have been proposed …