Qualified answers that reflect user needs and preferences

PDF Version Also Available for Download.

Description

This paper introduces a formalism to describe the needs and preferences of database users. Because of the precise formulation of these concepts, we have found an automatic and {ital very simple} mechanism to incorporate user needs and preferences into the query answering process. In the formalism, the user provides a lattice of domain independent values that define preferences and needs and a set of domain specific {ital user constraints} qualified with lattice values. The constraints are automatically incorporated into a relational or deductive database through a series of syntactic transformations that produces an annotated deductive database. Query answering procedures for ... continued below

Physical Description

16 p.

Creation Information

Gaasterland, T. & Lobo, J. December 31, 1994.

Context

This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. More information about this article can be viewed below.

Who

People and organizations associated with either the creation of this article or its content.

Authors

  • Gaasterland, T. Argonne National Lab., IL (United States)
  • Lobo, J. Illinois Univ., Chicago, IL (United States). Dept. of Electrical Engineering and Computer Science

Sponsors

Publisher

Provided By

UNT Libraries Government Documents Department

Serving as both a federal and a state depository library, the UNT Libraries Government Documents Department maintains millions of items in a variety of formats. The department is a member of the FDLP Content Partnerships Program and an Affiliated Archive of the National Archives.

Contact Us

What

Descriptive information to help identify this article. Follow the links below to find similar items on the Digital Library.

Description

This paper introduces a formalism to describe the needs and preferences of database users. Because of the precise formulation of these concepts, we have found an automatic and {ital very simple} mechanism to incorporate user needs and preferences into the query answering process. In the formalism, the user provides a lattice of domain independent values that define preferences and needs and a set of domain specific {ital user constraints} qualified with lattice values. The constraints are automatically incorporated into a relational or deductive database through a series of syntactic transformations that produces an annotated deductive database. Query answering procedures for deductive databases are then used, with minor modifications, to obtain annotated answers to queries. Because preference declaration is separated from data representation and management, preferences can be easily altered without touching the database. Also, the query language allows users to ask for answers at different preference levels. 18 refs., 1 fig.

Physical Description

16 p.

Notes

OSTI as DE96013597

Source

  • 20. international conference on very large databases, Santiago (Chile), 12-15 Sep 1994

Language

Item Type

Identifier

Unique identifying numbers for this article in the Digital Library or other systems.

  • Other: DE96013597
  • Report No.: ANL/MCS/CP--89681
  • Report No.: CONF-9409441--1
  • Grant Number: W-31-109-ENG-38
  • Office of Scientific & Technical Information Report Number: 281740
  • Archival Resource Key: ark:/67531/metadc667235

Collections

This article is part of the following collection of related materials.

Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

What responsibilities do I have when using this article?

When

Dates and time periods associated with this article.

Creation Date

  • December 31, 1994

Added to The UNT Digital Library

  • June 29, 2015, 9:42 p.m.

Description Last Updated

  • June 24, 2016, 1:34 p.m.

Usage Statistics

When was this article last used?

Yesterday: 0
Past 30 days: 0
Total Uses: 3

Interact With This Article

Here are some suggestions for what to do next.

Start Reading

PDF Version Also Available for Download.

Citations, Rights, Re-Use

Gaasterland, T. & Lobo, J. Qualified answers that reflect user needs and preferences, article, December 31, 1994; Illinois. (digital.library.unt.edu/ark:/67531/metadc667235/: accessed December 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.