Relational algebra and a point of view for using null value in a fuzzy database model.
نویسندگان
چکیده
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ژورنال
عنوان ژورنال: Journal of Computer Science and Cybernetics
سال: 2012
ISSN: 1813-9663,1813-9663
DOI: 10.15625/1813-9663/17/4/2285