Abstract
Commonly used methods to deal with the safety issue in relational databases are based on “placing constraint of finiteness” on relational calculus. This paper describes how safety can be achieved using a novel approach. A new representation is created to denote the relations defined by relational calculus. An algorithm which can symbolically handle infinite relations is designed to efficiently compute all these relations. Therefore the constraint of finiteness on relational calculus can be removed.
Preview
Unable to display preview. Download preview PDF.
References
C. Beeri, S. Naqvi, R. Ramakrishnan, O. shmueli, and S. Tsur: Sets and negation in a logic database language(LDL1). Proc. Sixth ACM Symp. on Principles of Database Systems, pp. 21–37, 1987
A. V. Gelder and W. R. Topor: Safety and correct translation of relational calculus formulas. Proc. sixth ACM Symp. on Principles of Database Systems, pp.313–327, 1987
G. M. Kuper G. M.: Logic programming with sets. Proc. sixth ACM Symp. on Principles of Database Systems, pp.11–20, 1987
R. Ramakrishnan, F. Bancilhon, and A. Sillberschatz: Safety of recursive Horn clauses with infinite relations. Proc. sixth ACM Symp. on Principles of Database Systems, pp. 328–339, 1987
O. Shmuel: Decidability and Expressiveness aspects of logic queries. Proc. sixth ACM Symp. on Principles of Database Systems, pp. 237–249
J. D. Ullmman: Database and Knowledge-base Systems vol. 1, Classical Database Systems, Computer-Science Press, 1988
C. Zaniolo: Safety and Compilation of Nonrecursive Horn ClausesProc. First Intl. Conf. on Expert Database Systems, BenjaminCummings, Menlo Park, CA, 1986
Author information
Authors and Affiliations
Editor information
Rights and permissions
Copyright information
© 1995 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Zhang, R. (1995). Computing infinite relations using finite expressions: A new approach to the safety issue in relational databases. In: Du, DZ., Li, M. (eds) Computing and Combinatorics. COCOON 1995. Lecture Notes in Computer Science, vol 959. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0030823
Download citation
DOI: https://doi.org/10.1007/BFb0030823
Published:
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-60216-3
Online ISBN: 978-3-540-44733-7
eBook Packages: Springer Book Archive