An efficient method for temporal aggregation with range-condition attributes

Sung Tak Kang, Yon Dohn Chung, Myoung Ho Kim

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


The temporal aggregate in temporal databases is an extension of the conventional aggregate to include the time on the range condition of aggregation. It is a useful operation for Historical Data Warehouses, Call Data Records, and so on. In this paper, we propose a structure for the temporal aggregation with multiple range-condition attributes, called the ITA-tree, and an aggregate processing method based on the structure. In the ITA-tree, we transform the time interval of a record into a single value, called the T-value. Then, we index records according to their T-values like a B+-tree style. For possible hot-spot situations, we also propose an improvement of the ITA-tree, called the eITA- tree. Through analyses and experiments, we evaluate the performance of the proposed method.

Original languageEnglish
Pages (from-to)243-265
Number of pages23
JournalInformation Sciences
Issue number1-4
Publication statusPublished - 2004 Dec 3

Bibliographical note

Funding Information:
This research was supported in part by University IT Research Center Project.

Copyright 2008 Elsevier B.V., All rights reserved.


  • Databases
  • Temporal aggregation
  • Temporal databases

ASJC Scopus subject areas

  • Software
  • Control and Systems Engineering
  • Theoretical Computer Science
  • Computer Science Applications
  • Information Systems and Management
  • Artificial Intelligence


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