What is a query tree, Database Management System

What is a query tree?    

Ans:  A query tree, as well known as operator graph, is a tree data structure that corresponds to a relational algebra expression. It denotes the input relations of the query as leaf nodes of the tree, and denotes the relational algebra operations as internal nodes or root node.

 

Posted Date: 5/4/2013 2:00:00 AM | Location : United States







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