Results 271 to 280 of about 27,515,411 (316)
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Future Generation Computer Systems, 2017
Data and models are two well established communities that are continuously contributing in new challenges in different research domains including cyberphysical systems (Yoo and Shon, 2016 [1]), cloud computing (Jararweh etal., 2016 [2]), service oriented applications, social networks (Yahyaoui etal., 2013 [3]), big data (with its five Vs ...
Ladjel Bellatreche +2 more
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Data and models are two well established communities that are continuously contributing in new challenges in different research domains including cyberphysical systems (Yoo and Shon, 2016 [1]), cloud computing (Jararweh etal., 2016 [2]), service oriented applications, social networks (Yahyaoui etal., 2013 [3]), big data (with its five Vs ...
Ladjel Bellatreche +2 more
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ACM Transactions on Database Systems, 1995
In this article, we present an extended relational algebra with universally or existentially quantified classes as attribute values. The proposed extension can greatly enhance the expressive power of relational systems, and significantly reduce the size of a database, at small additional computational cost.
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In this article, we present an extended relational algebra with universally or existentially quantified classes as attribute values. The proposed extension can greatly enhance the expressive power of relational systems, and significantly reduce the size of a database, at small additional computational cost.
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Data Dictionary und Data Modeler
1998Das Data Dictionary (DDIC) enthalt alle Informationen uber Struktur, Bezeichnungen und Be-ziehungen von Daten des R/3-Systems. Das Data Dictionary verwaltet keinerlei Nutzdaten, Son-dern nur sog, Metadaten. Andereseits wird es-wie die Nutzdaten auch-in der R/3-Datenbank abgelegt.
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Information Sciences, 1989
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
James P. Held, John V. Carlis
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zbMATH Open Web Interface contents unavailable due to conflicting licenses.
James P. Held, John V. Carlis
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Proceedings of the 14th International Conference on Computer Systems and Technologies, 2013
In this paper the model PER (Process Entity Relationships) for semantic data modeling is presented, based on process and architectural approach. Terms, symbols and conventions used are explained. The levels of the model were described, and some example models are given.
Hristo Tujarov +2 more
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In this paper the model PER (Process Entity Relationships) for semantic data modeling is presented, based on process and architectural approach. Terms, symbols and conventions used are explained. The levels of the model were described, and some example models are given.
Hristo Tujarov +2 more
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2015
In today’s internet-centric world, web applications have replaced desktop applications. Cloud systems are frequently used to store and manage user data. Given the complexity inherent in web applications, it is imperative to ensure that this data is never corrupted.
Ivan Bocic, Tevfik Bultan
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In today’s internet-centric world, web applications have replaced desktop applications. Cloud systems are frequently used to store and manage user data. Given the complexity inherent in web applications, it is imperative to ensure that this data is never corrupted.
Ivan Bocic, Tevfik Bultan
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1987
The censored normal regression model considered by Tobin (1958), also commonly known as the ‘tobit’ model, is the following: $$y_i^* = \beta {x_i} + {u_i}.\quad {u_i} \sim IN(0,{\sigma ^2})$$ The observed y i are related to y i * according to the relationship $$\eqalign{ & {y_i} = y_i^*\quad if\,y_i^* > {y_0} \cr & = {y_0}\quad \;\quad ...
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The censored normal regression model considered by Tobin (1958), also commonly known as the ‘tobit’ model, is the following: $$y_i^* = \beta {x_i} + {u_i}.\quad {u_i} \sim IN(0,{\sigma ^2})$$ The observed y i are related to y i * according to the relationship $$\eqalign{ & {y_i} = y_i^*\quad if\,y_i^* > {y_0} \cr & = {y_0}\quad \;\quad ...
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1998
While schema descriptions are a necessity for large database applications, many current hypermedia applications have been developed without semantic modeling. Addressing these shortcomings several modeling techniques for hypermedia systems have been developed recently, which extend known domain modeling techniques from the database and software ...
Peter Fröhlich 0001 +2 more
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While schema descriptions are a necessity for large database applications, many current hypermedia applications have been developed without semantic modeling. Addressing these shortcomings several modeling techniques for hypermedia systems have been developed recently, which extend known domain modeling techniques from the database and software ...
Peter Fröhlich 0001 +2 more
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Journal of Management Information Systems, 1986
Abstract:The design of a model management component begins with choosing a representation for the models in the model base. We propose to represent models as data in a database having a logical structure suggested by the principles of structured modeling. The mathematical functions used in modeling are represented as factorable functions.
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Abstract:The design of a model management component begins with choosing a representation for the models in the model base. We propose to represent models as data in a database having a logical structure suggested by the principles of structured modeling. The mathematical functions used in modeling are represented as factorable functions.
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Models AND data; data AND models
Journal of Contaminant Hydrology, 2003David, Lerner +3 more
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