Efficient processing of nested Fuzzy SQL queries in a fuzzy database

IEEE Transactions on Knowledge and Data Engineering

Volumn 13, Issue 6, 2001, Pages 884-901

  Yang, Qi ^b   Zhang, Weining ^a,c   Liu, Chengwen ^a,d   Wu, Jing ^e   Yu, Clement ^a,e   Nakajima, Hiroshi ^a,f   Rishe, Naphtali David ^g  

^a IEEE

^b UNIVERSITY OF WISCONSIN PLATTEVILLE   (United States)

^c University of Texas at San Antonio   (United States)

^d DEPAUL UNIVERSITY   (United States)

^e 1120 Science and Engineering Offices   (United States)

^f OMRON CORPORATION   (Japan)

^g The Department of Electrical and Computer Engineering   (United States)

Author keywords

Fuzzy database; Fuzzy equijoin; Fuzzy SQL; Nested fuzzy query; Performance evaluation; Possibility distribution; Query optimization; Query transformation

Indexed keywords

FUZZY DATABASES; QUERY TRANSFORMATION;

FUZZY SETS; OPTIMIZATION; QUERY LANGUAGES; SEMANTICS;

RELATIONAL DATABASE SYSTEMS;

EID: 0035517875     PISSN: 10414347     EISSN: None     Source Type: Journal    
DOI: 10.1109/69.971185     Document Type: Article

References (43)

1. On the representation and querying of sets of possible worlds
2. Design, implementation and evaluation of SCORE (a system for content based retrieval of pictures)
3. A fuzzy relational inference language for expert systems
4. Fuzzy querying with SQL: Extensions and implementation aspects
5. Imprecise data management and flexible querying in databases
6. SQLf: A relational database language for fuzzy querying
7. Extending the database relational model to capture more meaning
8. Of nests and trees: A unified approach to processing queries that contain nested queries, aggregates, and quantifiers
9. An evaluation of non-equijoin algorithms
10. Measuring properties of fuzzy sets: A general techniques and its use in fuzzy query evaluation
11. Fuzzy sets - A survey of eng. applications
12. First experiments in viewshed uncertainty-simulating fuzzy viewsheds
13. Query evaluation techniques for large databases
14. Optimization of nested SQL queries revisited
15. Incomplete information in relational databases
16. On optimizing an SQL-like nested query
17. Optimization of nested queries in a distributed relational database
18. Generalized joins
19. Improved unnesting algorithms for join aggregate SQL queries
20. Development of an efficient fuzzy SQL for large scale fuzzy relational database
21. The adaptive-hash join algorithms for a hypercube multicomputer
22. Generalizing database relational algebra for the treatment of incomplete or uncertain information and vague queries
23. Fuzzy relational databases: Representational issues and reduction using similarity measures
24. Representation of soft constraints and fuzzy attribute values by means of possibility distribution in databases
25. Extending fuzzy relational query languages by aggregates
26. Aggregates in possibilistic databases
27. Extending the algebraic framework of query processing to handle outer-joins
28. An extended version of the fuzzy relational database model
29. Query optimization in distributed object-oriented database systems
30. Efficient evaluation of the valid-time natural join
31. FastSort: A distributed single-input single-output external sort
32. Fuzzy relational algebra for possibility-distribution-fuzzy-relational model of fuzzy data
33. Fuzzy sets
34. Fuzzy sets as a basis for a theory of possibility
35. Implementing imprecision in information systems
36. An efficient evaluation of a fuzzy equi-join using fuzzy equality indicators
37. A relational model for imprecise queries