首页>
外国专利>
Histogram-based approximation of set-valued query-answers
Histogram-based approximation of set-valued query-answers
展开▼
机译:集值查询答案的基于直方图的近似值
展开▼
页面导航
摘要
著录项
相似文献
摘要
A method for generating an approximate answer in response to a query to a database in which an SQL query Q for operating on a relation R in a database is received. Relation R has an associated histogram H. The SQL query Q is translated to be a query Q′ for operating on histogram H. Translated query Q′ is executed on histogram H for obtaining a result histogram. The result histogram is expanded into a relation having tuples containing approximate attribute values.
展开▼