서지주요정보
OLAP 환경에서 MAX-of-SUM 질의들의 효율적인 처리 기법 = Efficient processing of MAX-of-SUM queries in OLAP environment
서명 / 저자 OLAP 환경에서 MAX-of-SUM 질의들의 효율적인 처리 기법 = Efficient processing of MAX-of-SUM queries in OLAP environment / 정희정.
저자명 정희정 ; Cheong, Hee-Jeong
발행사항 [대전 : 한국과학기술원, 1999].
Online Access 원문보기 원문인쇄

소장정보

등록번호

8009840

소장위치/청구기호

학술문화관(문화관) 보존서고

MCS 99036

SMS전송

도서상태

이용가능

대출가능

반납예정일

등록번호

9006025

소장위치/청구기호

서울 학위논문 서가

MCS 99036 c. 2

SMS전송

도서상태

이용가능

대출가능

반납예정일

초록정보

OLAP(On-Line Analytical Processing) systems allow knowledge workers to manipulate operational data intuitively, quickly, and flexibly in order to support their decision making processes. Since OLAP involves hundreds of complex aggregate queries over large volumes of data, it is not feasible to compute those queries directly on the raw data. Therefore, OLAP systems usually precompute some of queries into summary table to speed up data analysis. Recent researches about range queries in OLAP are only concerned with applying an aggregation operation over all selected cells. But it is also needed for better analysis to find ranges which satisfy a condition on consecutive aggregations. In this work, we propose an efficient processing method for "MAX-of-SUM query." The MAX-of-SUM query finds the maximal value of given sized range sum and the range which produces the maximal value. In order to process the MAX-of-SUM query efficiently, we introduce measures which predict the scopes of range sums. By using these measures, we can find data items which can't have maximal value and so we can reduce data which must be searched. We perform experiments in order to show performance enhancement. The results of experiments show that out method works good.

서지기타정보

서지기타정보
청구기호 {MCS 99036
형태사항 30 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Hee-Jeong Cheong
지도교수의 한글표기 : 김명호
지도교수의 영문표기 : Myoung-Ho Kim
학위논문 학위논문(석사) - 한국과학기술원 : 전산학과,
서지주기 참고문헌 : p. 29-30
주제 OLAP
영역 질의
효율적인 처리 기법
OLAP
Range query
Efficient processing
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