Preferences; Putting More Knowledge into Queries.

M. Lacroix, Pierre Lavency: Preferences; Putting More Knowledge into Queries. VLDB 1987: 217-225
  author    = {M. Lacroix and
               Pierre Lavency},
  editor    = {Peter M. Stocker and
               William Kent and
               Peter Hammersley},
  title     = {Preferences; Putting More Knowledge into Queries},
  booktitle = {VLDB'87, Proceedings of 13th International Conference on Very
               Large Data Bases, September 1-4, 1987, Brighton, England},
  publisher = {Morgan Kaufmann},
  year      = {1987},
  isbn      = {0-934613-46-X},
  pages     = {217-225},
  ee        = {db/conf/vldb/LacroixL87.html},
  crossref  = {DBLP:conf/vldb/87},
  bibsource = {DBLP,}


Classical query languages provide a way to express mandatory qualifications on the data to be retrieved. They do not feature facilities for expressing preferences or desirable qualifications. The need for preferences is illustrated in a software engineering framework. A preference mechanism is then presented as an extension of a language of the Domain Relational Calculus family, and the expressive power of the resulting language is discussed. The proposed mechanisms are shown to effectively allow the use of queries for supporting software configuration management functions.

Copyright © 1987 by the VLDB Endowment. Permission to copy without fee all or part of this material is granted provided that the copies are not made or distributed for direct commercial advantage, the VLDB copyright notice and the title of the publication and its date appear, and notice is given that copying is by the permission of the Very Large Data Base Endowment. To copy otherwise, or to republish, requires a fee and/or special permission from the Endowment.

Online Paper

ACM SIGMOD Anthology

CDROM Version: Load the CDROM "Volume 1 Issue 4, VLDB '75-'88" and ... DVD Version: Load ACM SIGMOD Anthology DVD 1" and ... BibTeX

Printed Edition

Peter M. Stocker, William Kent, Peter Hammersley (Eds.): VLDB'87, Proceedings of 13th International Conference on Very Large Data Bases, September 1-4, 1987, Brighton, England. Morgan Kaufmann 1987, ISBN 0-934613-46-X
Contents BibTeX


Michel Lacroix, Alain Pirotte: Domain-Oriented Relational Languages. VLDB 1977: 370-378 BibTeX
Jeffrey D. Ullman: Principles of Database Systems, 2nd Edition. Computer Science Press 1982, ISBN 0-914894-36-6
E. F. Codd: Relational Completeness of Data Base Sublanguages. In: R. Rustin (ed.): Database Systems: 65-98, Prentice Hall and IBM Research Report RJ 987, San Jose, California : (1972) BibTeX
David B. Leblang, Robert P. Chase Jr.: Computer-Aided Software Engineering in a Distributed Workstation Environment. Software Development Environments (SDE) 1984: 104-112 BibTeX
Stuart I. Feldman: Make-A Program for Maintaining Computer Programs. Softw., Pract. Exper. 9(4): 255-65(1979) BibTeX
Amihai Motro: Extending the Relational Database Model to Support Goal Queries. Expert Database Conf. 1986: 129-150 BibTeX

Referenced by

  1. Norbert Fuhr: A Probabilistic Framework for Vague Queries and Imprecise Information in Databases. VLDB 1990: 696-707
  2. Surajit Chaudhuri: Generalization and a Framework for Query Modification. ICDE 1990: 138-145
ACM SIGMOD Anthology - DBLP: [Home | Search: Author, Title | Conferences | Journals]
VLDB Proceedings: Copyright © by VLDB Endowment,
ACM SIGMOD Anthology: Copyright © by ACM (, Corrections:
DBLP: Copyright © by Michael Ley (, last change: Sat May 16 23:45:34 2009