Items where Author is "Demetrovics, János"

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Number of items: 69.

1992

DateAuthor/TitleDocument Type
1992Demetrovics, János and Libkin, L. and Muchnik, IB
Functional dependencies in relational databases: a lattice point of view
Article
1992Demetrovics, János and Hencsey, G. and Libkin, L. and Muchnik, I.
Normal form relation schemes: a new characterization
Article
1992Demetrovics, János and Rónyai, Lajos and SON, HN
ON THE COMPOSITION AND DECOMPOSITION OF ATTRIBUTES AND TUPLES
Article
1992Demetrovics, János and Hencsey, G. and Libkin, L. and Muchnik, I.
On the interaction between closure operations and choice functions with applications to relational databases
Article
1992Demetrovics, János and Katona, GOH and Miklós, D.
Partial dependencies in relational databases and their realization
Article
1992Demetrovics, János and Huy, NX
Representation of closure for functional, multivalued and join dependencies
Article
1992Demetrovics, János and Katona, GOH and Sali, A.
The characterization of branching dependencies
Article
1992Demetrovics, János and Rónyai, Lajos
A note on intersections of isotone clones
Article

1993

DateAuthor/TitleDocument Type
1993Demetrovics, János and Thi, VD
Algorithms for generating an Armstrong relation and inferring functional dependencies in the relational datamodel
Article
1993Demetrovics, János and Rónyai, Lajos and Son, HN
Equality schemes and equality scheme dependencies in relational databases
Article
1993Demetrovics, János and Rónyai, Lajos and Son, H.
Functional dependencies among Boolean dependencies
Book Section
1993Demetrovics, János and Thi, VD
Generating Armstrong relations for relation schemes and inferring functional dependencies from relations
Article
1993Burosch, G. and Demetrovics, János and Katona, GOH and Kleitman, DJ and Sapozhenko, AA
On the number of closure operations
Book Section
1993Demetrovics, János and Thi, VD
On the time complexity of algorithms related to Boyce-Codd normal form
Article
1993Demetrovics, János and Thi, VD
Some computational problems related to the functional dependency in the relational datamodel
Article
1993Demetrovics, János and Thi, VD
Some problems concerning Armstrong relations of dual schemes and relation schemes in the relational datamodel
Article
1993Demetrovics, János and Thi, VD
Some problems concerning keys for relation schemes and relations in the relational datamodel
Article
1993Demetrovics, János and Katona, GOH
A survey of some combinatorial results concerning functional dependencies in database relations
Book Section

1994

DateAuthor/TitleDocument Type
1994Demetrovics, János and Son, HN
Databases, closure operations and sperner families
Conference or Workshop Item
1994Demetrovics, János and Thi, VD
Normal forms and minimal keys in the relational datamodel
Article

1995

DateAuthor/TitleDocument Type
1995Demetrovics, János and Thi, VD
Armstrong relations, functional dependencies and strong dependencies
Article
1995Demetrovics, János and Thi, VD
Family of functional dependencies and its equivalent descriptions
Article
1995Demetrovics, János and Katona, GYOH and Sali, A.
Minimal representations of branching dependencies
Article
1995Demetrovics, János and Katona, GYOH and Miklós, D. and Seleznjev, O. and Thalheim, B.
The average length of keys and functional dependencies in (random) databases
Conference or Workshop Item

1996

DateAuthor/TitleDocument Type
1996Demetrovics, János and Rónyai, Lajos and Rosenberg, IG and Stojmenovic, I.
Clones and maximal sets in set logic containing all Boolean functions
Article
1996Demetrovics, János and Thi, VD
Some results about normal forms for functional dependency in the relational datamodel
Article
1996Biró, M. and Demetrovics, János and Hetthéssy, J. and Remzső, T.
An overview of EDI and applications in Hungary
Conference or Workshop Item

1998

DateAuthor/TitleDocument Type
1998Demetrovics, János and Katona, GOH and Miklós, D. and Seleznjev, O. and Thalheim, B.
Asymptotic properties of keys and functional dependencies in random databases
Article
1998Demetrovics, János and Katona, GOH and Sali, A.
Design type problems motivated by database theory
Article
1998Demetrovics, János and Katona, GOH and Miklós, D. and Seleznjev, O. and Thalheim, B.
Functional dependencies in random databases
Article
1998Demetrovics, János and Friedl, K. and Rónyai, Lajos
Periodical scheduling
Article

1999

DateAuthor/TitleDocument Type
1999Demetrovics, János and Thi, VD
Describing candidate keys by hypergraphs
Article
1999Békéssy, A. and Demetrovics, János
Előadások adatbázis szerkezetekből. (Lectures on database structures.) (in Hungarian.) Egyetemi jegyzet
Book
1999Demetrovics, János and Kul'ba, VV and Selkov, AB and Urbánszki, F.
Informacionnaa bezopasnost' avtomatizirovannyh sistem upravlenia. (Information security of automatic control systems.) (in Russian)
Conference or Workshop Item
1999Demetrovics, János and Pethő, A. and Rónyai, Lajos
On plus-minus 1-representations of integers
Article

2000

DateAuthor/TitleDocument Type
2000Demetrovics, János and Katona, GYOH
Az algoritmusok bonyolultsága
Article
2000Demetrovics, János and Katona, GOH and Miklós, D.
Error-correcting keys in relational databases
Article
2000Anstee, R. and Demetrovics, János and Katona, GOH and Sali, A.
Low discrepancy allocation of two-dimensional data
Article
2000Demetrovics, János and Thi, VD
Some computational problems related to Boyce-Codd normal form
Article

2002

DateAuthor/TitleDocument Type
2002Demetrovics, János and Katona, GOH and Miklós, D.
Functional dependencies in the presence of errors
Conference or Workshop Item
2002Demetrovics, János and Katona, GOH and Miklós, D. and Sali, A.
Kombinatorikus problémák relációs adatbázisokban. (Combinatorial problems in relational databases.) (in Hungarian)
Book Section

2003

DateAuthor/TitleDocument Type
2003Demetrovics, János and Rónyai, Lajos and Son, H.
Dependencies and generalized relations
Article
2003Demetrovics, János and Katona, GOH and Sali, A.
Recent combinatorial results in the theory of relational databases
Article

2004

DateAuthor/TitleDocument Type
2004Demetrovics, János and Molnár, A. and Thalheim, B.
Graphical and Spreadsheet Reasoning for Sets of Functional Dependencies. (Christian Albrechts Universität. Institut für Informatik und Praktische Mathematik 0404)
Book
2004Demetrovics, János and Molnár, A. and Thalheim, B.
Graphical reasoning for sets of functional dependencies
Article
2004Demetrovics, János and Sali, A.
Relációs adatmodell tervezés
Book Section

2005

DateAuthor/TitleDocument Type
2005Békéssy, A. and Demetrovics, János
Adatbázis-szerkezetek
Book
2005Demetrovics, János and Sali, A.
Lekérdezés-átírás relációs adatbázisokban
Book Section

2006

DateAuthor/TitleDocument Type
2006Demetrovics, János and Katona, GOH and Miklós, D. and Thalheim, B.
On the number of independent functional dependencies
ISI Article
2006Demetrovics, János and Molnár, András and Thalheim, Bernhard
Relációs adatbázisok funkcionális függőségi rendszereinek grafikus axiomatizációja
Article

2007

DateAuthor/TitleDocument Type
2007Demetrovics, János and Sali, A.
Query rewriting in relational databases
Book Section
2007Demetrovics, János and Sali, A.
Relational database design
Book Section
2007Demetrovics, János and Molnár, András and Thalheim, Bernhard
Relációs adatbázisok funkcionális függőségi rendszereinek grafikus axiomatizációja
Article

2008

DateAuthor/TitleDocument Type
2008Demetrovics, János and Katona, Gyula O. H. and Miklós, Dezső
Functional dependencies distorted by errors
ISI Article
2008Demetrovics, János and Molnár, András and Thalheim, Berhard
Graphs representimg sets of functional dependencies
Article

2009

DateAuthor/TitleDocument Type
2009Demetrovics, János and Molnár, András and Thalheim, Bernhard
Reasoning methods for designing and surveying relationships described by sets of functional constraints
Article

2011

DateAuthor/TitleDocument Type
2011-09-26Demetrovics, János and Hua Nam, Son and Gubán, Ákos
An algebraic approach to market basket model: explicit represenatation of frequent market baskets and associations rules
Conference or Workshop Item
2011Demetrovics, János and Hua, Nam Son and Gubán, Ákos
An Algebraic Representation of Frequent Market Baskets and Association Rules
Article
2011Demetrovics, János and Hua, Nam Son and Gubán, Ákos
An Algebraic Representation of Frequent Market Baskets and Association Rules
Article
2011Demetrovics, János and Hua Nam, Son and Gubán, Ákos
An algebraic representation of frequent market baskets and association rules
Article
2011Demetrovics, János and Hua, Nam Son and Gubán, Ákos
An algebric approach to market basket model
Conference or Workshop Item

2012

DateAuthor/TitleDocument Type
2012Demetrovics, János and Hua, Nam Son and Gubán, Ákos
Logical Representation of Dependencies of Items and the Complexity of Customer Sets
Conference or Workshop Item

2013

DateAuthor/TitleDocument Type
2013Demetrovics, János and Thi, Vu Duc and Giang, Nguyen Long
A Distance-Based Method for Attribute Reduction in Incomplete Decision Systems
Article
2013Demetrovics, János and Vu, Duc and Nguyen, Long
An Efficient Algorithm for Determining the Set of All Reductive Attributes in Incomplete Decision Tables
Article

2014

DateAuthor/TitleDocument Type
2014Demetrovics, János and Thi, Vu Duc and Giang, Nguyen Long
Metric based attribute reduction in dynamic desicion tables
Article
2014Demetrovics, János and Son, Hua Nam and Gubán, Ákos
An algebraic approach to the study of market baskets and their classification
Article

2016

DateAuthor/TitleDocument Type
2016Demetrovics, János and Hua, Nam Son and Gubán, Ákos
A Formal Representation for Structured Data
Article

2018

DateAuthor/TitleDocument Type
2018Demetrovics, János and Quang, Hoang Minh and Thi, Vu Duc and Anh, Nguyen Viet
An Efficient Method to Reduce the Size of Consistent Decision Tables
Article

2019

DateAuthor/TitleDocument Type
2019Duong, H T and Demetrovics, János and Thi, V D and Thang, N T and Anh, T T
An Algorithm for Mining High Utility Sequential Patterns with Time Interval
Article
This list was generated on Sun Mar 7 03:13:17 2021 CET.