Analysis of the Context Dependency of CODASYL Find-Statements with Application to Database Program Conversion.

G. Barbara Demo, Sukhamay Kundu: Analysis of the Context Dependency of CODASYL Find-Statements with Application to Database Program Conversion. SIGMOD Conference 1985: 354-361

@inproceedings{DBLP:conf/sigmod/DemoK85,
  author    = {G. Barbara Demo and
               Sukhamay Kundu},
  editor    = {Shamkant B. Navathe},
  title     = {Analysis of the Context Dependency of CODASYL Find-Statements
               with Application to Database Program Conversion},
  booktitle = {Proceedings of the 1985 ACM SIGMOD International Conference on
               Management of Data, Austin, Texas, May 28-31, 1985},
  publisher = {ACM Press},
  year      = {1985},
  pages     = {354-361},
  ee        = {http://doi.acm.org/10.1145/318898.318936, db/conf/sigmod/DemoK85.html},
  crossref  = {DBLP:conf/sigmod/85},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

Abstract

The CODASYL database (db) statements in an application program can have one or more different semantics associated with it, depending on the path through which the execution reaches that statement. This makes the CODASYL operations in a db program context dependent. The previous works on the conversion of db programs from the CODASYL record at a time interface to the set at a time interface of the relational model consider only a limited class of programs where each db statement in the program is assumed to have a unique semantic interpretation. In this paper, we first define a framework for analyzing the multiple semantics of the CODASYL operations and their context dependencies. We then show how to convert a CODASYL db program which contains statements having ambiguous, multiply- defined semantics. In principle, the method described here allows us to convert all CODASYL db programs.

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References

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