专利检索 ap:("Informix Software, Inc.") AND inv:"Smedberg, Michael" 第 1 页

1.

发明公开
Method and apparatus for performing an aggregate query in a database system 失效
标题翻译：的方法和装置，以在数据库系统中执行联合查询，

公开(公告)号：EP0856802A3

公开(公告)日：2001-02-21

申请号：EP98200178.6

申请日：1998-01-23

申请人： Informix Software, Inc.

发明人： Friedman, Paul , Smedberg, Michael

IPC分类号： G06F17/30

CPC分类号： G06F17/30536 , Y10S707/99933 , Y10S707/99935

摘要： In a computer-implemented method for generating a response to an aggregate query request on a source database, a random sample of records is extracted from the source database to generate a sample database. Then an aggregate query is performed on the sample database to generate a sample result, and an estimate of the aggregate query request on the source database is derived from the sample result.

2.

发明公开
Method and apparatus for performing an aggregate query in a database system 失效
标题翻译：数据库系统auszuführen的Verfahren undGerät，um vereinte Abfragen

公开(公告)号：EP0856802A2

公开(公告)日：1998-08-05

申请号：EP98200178.6

申请日：1998-01-23

申请人： Informix Software, Inc.

发明人： Friedman, Paul , Smedberg, Michael

IPC分类号： G06F17/30

CPC分类号： G06F17/30536 , Y10S707/99933 , Y10S707/99935

摘要： In a computer-implemented method for generating a response to an aggregate query request on a source database, a random sample of records is extracted from the source database to generate a sample database. Then an aggregate query is performed on the sample database to generate a sample result, and an estimate of the aggregate query request on the source database is derived from the sample result.

摘要翻译： 在用于生成对源数据库上的聚合查询请求的响应的计算机实现的方法中，从源数据库中提取随机的记录样本以生成样本数据库。然后在样本数据库上执行聚合查询以生成样本结果，并从样本结果导出源数据库上的聚合查询请求的估计。