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On the Use of an Extended Relational Model to Handle Changing Incomplete Information
July 1985 (vol. 11 no. 7)
pp. 620-633
ASCII Text
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A.M. Keller, M.W. Wilkins, "On the Use of an Extended Relational Model to Handle Changing Incomplete Information," IEEE Transactions on Software Engineering, vol. 11, no. 7, pp. 620-633, July, 1985.
 
 
BibTex
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@article{ 10.1109/TSE.1985.232506,
author = {A.M. Keller and M.W. Wilkins},
title = {On the Use of an Extended Relational Model to Handle Changing Incomplete Information},
journal ={IEEE Transactions on Software Engineering},
volume = {11},
number = {7},
issn = {0098-5589},
year = {1985},
pages = {620-633},
doi = {http://doi.ieeecomputersociety.org/10.1109/TSE.1985.232506},
publisher = {IEEE Computer Society},
address = {Los Alamitos, CA, USA},
}
 
 
RefWorks Procite/RefMan/Endnote
x 
 
TY - JOUR
JO - IEEE Transactions on Software Engineering
TI - On the Use of an Extended Relational Model to Handle Changing Incomplete Information
IS - 7
SN - 0098-5589
SP620
EP633
EPD - 620-633
A1 - A.M. Keller,
A1 - M.W. Wilkins,
PY - 1985
KW - updates
KW - Databases
KW - incomplete information
KW - null values
KW - relational databases
VL - 11
JA - IEEE Transactions on Software Engineering
ER -
 
A.M. Keller, Department of Computer Science, Stanford University
In this paper we consider approaches to updating databases containing null values and incomplete information. Our approach distinguishes between modeling incompletely known worlds and modeling changes in these worlds. As an alternative to the open and closed world assumptions, we propose the expanded closed world assumption. Under this assumption, we discuss how to perform updates on databases containing set nulls, marked nulls, and simple conditional tuples, and address some issues of refining incompletely specified information.
Index Terms:
updates, Databases, incomplete information, null values, relational databases
Citation:
A.M. Keller, M.W. Wilkins, "On the Use of an Extended Relational Model to Handle Changing Incomplete Information," IEEE Transactions on Software Engineering, vol. 11, no. 7, pp. 620-633, July 1985, doi:10.1109/TSE.1985.232506
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