Entity–attribute–value model

Entity–attribute–value model (EAV) is a data model to encode, in a space-efficient manner, entities where the number of attributes (properties, parameters) that can be used to describe them is potentially vast, but the number that will actually apply to a given entity is relatively modest. Such entities correspond to the mathematical notion of a sparse matrix. EAV is also known as object–attribute–value model, vertical database model, and open schema.

Comment
enEntity–attribute–value model (EAV) is a data model to encode, in a space-efficient manner, entities where the number of attributes (properties, parameters) that can be used to describe them is potentially vast, but the number that will actually apply to a given entity is relatively modest. Such entities correspond to the mathematical notion of a sparse matrix. EAV is also known as object–attribute–value model, vertical database model, and open schema.
Date
enNovember 2016
Has abstract
enEntity–attribute–value model (EAV) is a data model to encode, in a space-efficient manner, entities where the number of attributes (properties, parameters) that can be used to describe them is potentially vast, but the number that will actually apply to a given entity is relatively modest. Such entities correspond to the mathematical notion of a sparse matrix. EAV is also known as object–attribute–value model, vertical database model, and open schema.
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Entity–attribute–value model
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enEntity–attribute–value model
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msdn.microsoft.com/en-us/library/dd179338.aspx
senselab.med.yale.edu/
ycmi.med.yale.edu/TrialDB
code.google.com/appengine/docs/whatisgoogleappengine.html
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Apache
Apache Foundation
Apriori algorithm
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Attribute–value pair
Attribute–value system
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Category:Database models
Category:Database theory
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Clinical study
Cloud computing
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United States Department of Veterans Affairs
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Veterans Health Administration
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Reason
enWhat is row modelling? The following paragraphs assume that the reader already knows what it is. However, I cannot guess what it is, based on what is written. Is there an existing WP article on this topic?
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EAV (model)
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Category:Database models
Category:Database theory
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Entity–attribute–value model?oldid=1105280771&ns=0
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