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| Jui-Shang Chiu, Arbee L. P. Chen, "A Note on "Incomplete Relational Database Models Based on Intervals"," IEEE Transactions on Knowledge and Data Engineering, vol. 8, no. 1, pp. 189-191, February, 1996. | |||
| BibTex | x | ||
| @article{ 10.1109/69.485648, author = {Jui-Shang Chiu and Arbee L. P. Chen}, title = {A Note on "Incomplete Relational Database Models Based on Intervals"}, journal ={IEEE Transactions on Knowledge and Data Engineering}, volume = {8}, number = {1}, issn = {1041-4347}, year = {1996}, pages = {189-191}, doi = {http://doi.ieeecomputersociety.org/10.1109/69.485648}, publisher = {IEEE Computer Society}, address = {Los Alamitos, CA, USA}, } | |||
| RefWorks Procite/RefMan/Endnote | x | ||
| TY - JOUR JO - IEEE Transactions on Knowledge and Data Engineering TI - A Note on "Incomplete Relational Database Models Based on Intervals" IS - 1 SN - 1041-4347 SP189 EP191 EPD - 189-191 A1 - Jui-Shang Chiu, A1 - Arbee L. P. Chen, PY - 1996 KW - Incomplete information KW - disjunctive information KW - null values KW - extended relational model KW - extended relational algebra. VL - 8 JA - IEEE Transactions on Knowledge and Data Engineering ER - | |||
Abstract—In [5], a family of relational database models (M-1 to M-5) were proposed to represent unknown values by intervals. Relational operators were extended for evaluating queries on these models. In this note, we stultify the theorems claiming that query evaluation in models M-2, M-3, and M-5 is sound.
[1] T. Imielinski and W. Lipski Jr.,“Incomplete information in relational databases,” J. ACM, vol. 31, no. 4, pp. 761-791, 1984.
[2] D. Maier,The Theory of Relational Databases.Rockville, Md.: Computer Science Press, 1983.
[3] J. Minker,“On indefinite databases and the closed world assumption,” Proc. Automated Deduction Conf., pp. 292-308, 1982.
[4] A. Ola,“Relational databases with exclusive disjunctions,” Proc. IEEE Data Eng. Conf., pp. 328-336, 1992.
[5] A. Ola and G. Ozsoyoglu,“Incomplete relational database models based on intervals,” IEEE Trans. Knowledge and Data Engineering, vol. 5, no. 2, pp. 293-308, 1993.
[6] R. Reiter,"Towards a logical reconstruction of relational database theory," On Conceptual Modeling.New York: Springer-Verlag, pp. 191-233, 1984.