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Fourth normal form
Known as:
4NF
, 4th normal form
Fourth normal form (4NF) is a normal form used in database normalization. Introduced by Ronald Fagin in 1977, 4NF is the next level of normalization…
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Related topics
Related topics
14 relations
Attribute-value system
Boyce–Codd normal form
Candidate key
Data redundancy
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Papers overview
Semantic Scholar uses AI to extract papers important to this topic.
2015
2015
Learning an Extension of the Class of Functional Dependencies with Queries
Víctor Lavín Puente
New generation computing
2015
Corpus ID: 253849672
Data dependencies are a useful tool to design relational databases. In particular, functional and multivalued dependencies are…
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2008
2008
The existence condition of γ-acyclic database schemes with MVDs constraints
Zhongxiao Hao
,
Chun-Iong Yao
Journal of Computational Science and Technology
2008
Corpus ID: 10753696
It is very important to use database technology for a large-scale system such as ERP and MIS. A good database design may improve…
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2006
2006
PERANCANGAN ALAT BANTU NORMALISASI BCNF DAN 4NF
R. Susilo
,
Ie Siong Fat
,
Wilson Lesmana
2006
Corpus ID: 60129554
2005
2005
Unified Characterization of Symmetric Dependencies with Lattices
N. Given
2005
Corpus ID: 8309448
Symmetric dependencies, or MultiValued Dependencies-like, are those dependencies that follow the deduction rules of MultiValued…
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2003
2003
On the Definition of Functional Dependencies in XML
M. Vincent
2003
Corpus ID: 15518647
Recently, two different approaches have been proposed for defining functional dependencies in XML (XFDs). The first is based on…
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1994
1994
Key-Based Update Anomalies and the Justification for 4NF in Database Design
M. Vincent
,
B. Srinivasan
Australasian Database Conference
1994
Corpus ID: 28006274
1989
1989
Analysis, Design and Implementation of a Pilot Relational Database for Groundwater in the State of Arkansas
R. Hashemi-Nassab
1989
Corpus ID: 134524060
ANALYSIS, DESIGN AND IMPLEMENTATION OF A PILOT RELATIONAL DATABASE FOR GROUNDWATER IN THE STATE OF ARKANSAS There are several…
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1981
1981
A note on decompositions of relational databases
C. Beeri
,
Moshe Y. Vardi
SGMD
1981
Corpus ID: 13505016
One o f t h e ma in c o n c e r n s o f t h e t h e o r y o f r e l a t i o n a l d a t a b a s e s has been t h e s t u d y o f…
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1979
1979
Decomposition of a relation into fourth normal forms
Raymond Fadous
Annual International Computer Software and…
1979
Corpus ID: 27669303
In the relational model, various relationships may exist between the attributes in a relation. The relationships are described by…
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1979
1979
Logical Design of a 4NF D-Tree Schema of a Relational Data Base (Mathematical Methods in Software Science and Engineering)
Yuzuru Tanaka
1979
Corpus ID: 60395343