Where do we stand on measures of uncertainty, ambiguity, fuzziness, and the like?
Fuzzy Sets and Systems - Special Issue: Measures of Uncertainty
Fuzzy querying with SQL: extensions and implementation aspects
Fuzzy Sets and Systems - Mathematical Modelling
Towards the implementation of a generalized fuzzy relational database model
Fuzzy Sets and Systems
A statistical approach to incomplete information in database systems
ACM Transactions on Database Systems (TODS)
A relational model of data for large shared data banks
Communications of the ACM
Rough Sets: Theoretical Aspects of Reasoning about Data
Rough Sets: Theoretical Aspects of Reasoning about Data
An Introduction to Database Systems
An Introduction to Database Systems
Principles of Database Systems
Principles of Database Systems
Fuzzy Measure Theory
A comparative study of fuzzy rough sets
Fuzzy Sets and Systems
The Theory of Probabilistic Databases
VLDB '87 Proceedings of the 13th International Conference on Very Large Data Bases
A Rough Set Model for Relational Databases
RSKD '93 Proceedings of the International Workshop on Rough Sets and Knowledge Discovery: Rough Sets, Fuzzy Sets and Knowledge Discovery
A design methodology for databases with uncertain data
SSDBM'1994 Proceedings of the 7th international conference on Scientific and Statistical Database Management
Fuzzy query translation for relational database systems
IEEE Transactions on Systems, Man, and Cybernetics, Part B: Cybernetics
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The study of databases began with the design of efficient storage and data sharing techniques for large amount of data. This paper concerns the processing of imprecision and indiscernibility in relational databases using vague rough technique leading to vague rough relational database model. We utilize the notion of indiscernibility and possibility from rough set theory coupled with the idea of membership and non-membership values from vague set theory to represent uncertain information in a manner that maintains the degree of uncertainty of information for each tuple of the original database and also those resulting from queries. Comparisons of theoretical properties of operators within this model with those in the standard relational database model are discussed. A simple entity-relationship type diagram for database design, a database definition language and an SQL-like query language for vague rough relational database model are described.