Towards more Informative User Interfaces.

Jürgen M. Janas: Towards more Informative User Interfaces. VLDB 1979: 17-23
  author    = {J{\"u}rgen M. Janas},
  editor    = {Antonio L. Furtado and
               Howard L. Morgan},
  title     = {Towards more Informative User Interfaces},
  booktitle = {Fifth International Conference on Very Large Data Bases, October
               3-5, 1979, Rio de Janeiro, Brazil, Proceedings},
  publisher = {IEEE Computer Society},
  year      = {1979},
  pages     = {17-23},
  ee        = {db/conf/vldb/Janas79.html},
  crossref  = {DBLP:conf/vldb/79},
  bibsource = {DBLP,}


If a data base query fails, i.e., if the required information is not available, contemporary data base systems report the fact that the query failed rather than the actual reason for the failure. We argue that the deeper reason for a failure may be detected by computing certain subqueries of the user's query. We introduce a query language based on the relational calculus and show how the subqueries are inferred from a failing query which is expressed in this language. Moreover we demonstrate how a certain class of integrity constraints may be used to augment the procedure which is employed to compute an informative answer to a failing query. The method is a good means to clear the dialog between a user and the data base from unnecessary queries.

Copyright © 1979 by The Institute of Electrical and Electronic Engineers, Inc. (IEEE). Abstract used with permission.

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Printed Edition

Antonio L. Furtado, Howard L. Morgan (Eds.): Fifth International Conference on Very Large Data Bases, October 3-5, 1979, Rio de Janeiro, Brazil, Proceedings. IEEE Computer Society 1979
Contents BibTeX


François Bancilhon: On the Completeness of Query Languages for Relational Data Bases. MFCS 1978: 112-123 BibTeX
E. F. Codd: A Relational Model of Data for Large Shared Data Banks. Commun. ACM 13(6): 377-387(1970) BibTeX
E. F. Codd: A Database Sublanguage Founded on the Relational Calculus. SIGFIDET Workshop 1971: 35-68 BibTeX
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
Ronald M. Lee: Conversational Aspects of Database Interactions. VLDB 1978: 392-399 BibTeX

Referenced by

  1. Amihai Motro: FLEX: A Tolerant and Cooperative User Interface to Databases. IEEE Trans. Knowl. Data Eng. 2(2): 231-246(1990)
  2. Hervé Gallaire, Jack Minker, Jean-Marie Nicolas: Logic and Databases: A Deductive Approach. ACM Comput. Surv. 16(2): 153-185(1984)
  3. Hervé Gallaire: Impacts of Logic and Databases (Invited Paper). VLDB 1981: 248-259
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