Two approximate operators for a data base query language: sounds-like and close-to

Approximate retrieval in a database of formatted data allows values that are close to those requested to be retrieved. Two approximate retrieval operators added to a structured query language are discussed. The two operators are sounds-like (SL) and close-to (CT). The SL operator is used to match tw...

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Bibliographic Details
Published in:IEEE transactions on systems, man, and cybernetics man, and cybernetics, 1988-11, Vol.18 (6), p.873-884
Main Authors: McClelland, E.B., Trueblood, R.P., Eastman, C.M.
Format: Article
Language:English
Subjects:
Applied sciences
Computer errors
Computer science
Computer science
control theory
systems
Database languages
Exact sciences and technology
Information retrieval
Information systems. Data bases
Memory organisation. Data processing
Software
Testing
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Summary:Approximate retrieval in a database of formatted data allows values that are close to those requested to be retrieved. Two approximate retrieval operators added to a structured query language are discussed. The two operators are sounds-like (SL) and close-to (CT). The SL operator is used to match two character string values by comparing their phonic sounds. The CT operator is used to select a subset of numeric data values that are relatively close to a given value. These two operators have been implemented and tested in a relational database environment called BDB. These extensions suffice to handle all data types and to allow the approximate retrieval to objects as well as attributes.< >
ISSN:0018-9472
2168-2909
DOI:10.1109/21.23087