An Introduction to the Unified Database Language (UDL).

@inproceedings{DBLP:conf/vldb/Date80,
  author    = {C. J. Date},
  title     = {An Introduction to the Unified Database Language (UDL)},
  booktitle = {Sixth International Conference on Very Large Data Bases, October
               1-3, 1980, Montreal, Quebec, Canada, Proceedings},
  publisher = {IEEE Computer Society},
  year      = {1980},
  pages     = {15-32},
  ee        = {db/conf/vldb/Date80.html},
  crossref  = {DBLP:conf/vldb/80},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

Abstract

UDL consists of a set of database extensions for programming languages such as COBOL and PL/I. The first description of UDL was given in [1],and detailed specifications were published in [2-6]. The present paper provides an informal introduction to the concepts and facilities of UDL as currently defined [3,4], and thus forms a replacement for the original paper [1].

UDL per se is not dependent on any particular host programming language; its constructs and functions, or some suitable subset of them, can be mapped into the concrete syntax of a variety of such languages. For definiteness, however, this paper uses one specific language, namely Fl/I, as the basis for all examples.

Copyright © 1980 by The Institute of Electrical and Electronic Engineers, Inc. (IEEE). Abstract used with permission.

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References

[1]

C. J. Date: An Architecture for High-Level Language Database Extensions. SIGMOD Conference 1976: 101-122 BibTeX

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[9]

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

[10]

E. F. Codd, C. J. Date: Interactive Support For Non-Programmers: The Relational and Network Approaches. SIGMOD Workshop, Vol. 2 1974: 11-41 BibTeX

[11]

Robert W. Engles: An Analysis of the April 1971 Data Base Task Group Report. SIGFIDET Workshop 1971: 69-91 BibTeX

[12]

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[13]

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[14]

Rita C. Summers, Charles D. Coleman, Eduardo B. Fernández: A Programming Language Extension for Access to a Shared Data Base. ACM Pacific 1975: 114-118 BibTeX

[15]

C. J. Date: Locking and Recovery in a Shared Database System: An Application Programming Tutorial. VLDB 1979: 1-15 BibTeX

[16]

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Referenced by

1. Kazimierz Subieta: Semantics of Query Languages for Network Databases. ACM Trans. Database Syst. 10(3): 347-394(1985)
2. Ashok Malhotra, Harry M. Markowitz, Donald P. Pazel: EAS-E: An Integrated Approach to Application Development. ACM Trans. Database Syst. 8(4): 515-542(1983)
3. Kazimierz Subieta: High-Level Navigational Facilities for Network and Relational Databases. VLDB 1983: 380-386
4. Frederick H. Lochovsky, Dennis Tsichritzis: An Interactive Query Language for External Data Bases. VLDB 1982: 11-21
5. Dipayan Gangopadhyay, Umeshwar Dayal, James C. Browne: Semantics of Network Data Manipulation Languages: An Object-Oriented Approach. VLDB 1982: 357-369
6. Frank Manola, Alain Pirotte: CQLF - A Query Language for CODASYL-Type Databases. SIGMOD Conference 1982: 94-103
7. C. J. Date: Referential Integrity. VLDB 1981: 2-12