Results 21 to 30 of about 202,182 (283)

Set-Oriented Mining for Association Rules in Relational Databases [PDF]

open access: yes, 1995
Describe set-oriented algorithms for mining association rules. Such algorithms imply performing multiple joins and may appear to be inherently less efficient than special-purpose algorithms. We develop new algorithms that can be expressed as SQL queries,
Houtsma, M.A.W., Swami, A.
core   +3 more sources

Comparison between Relational and NoSQL Databases [PDF]

open access: yesAnnals of Dunarea de Jos University. Fascicle I : Economics and Applied Informatics, 2020
Relational databases have not been the only solution for the applications that use them for years. New applications must deal with large volumes of complex, distributed data of different types, whose volume increases very rapidly.
Gianina Mihai
doaj  

Analyzing The Encountered Problems and Possible Solutions of Converting Relational Databases to Graph Databases

open access: yesJournal of Advanced Research in Natural and Applied Sciences, 2022
Relational database management systems have been used for storing data for a long time.However, these systems are insufficient to analyze the large and complex structure of the data.
Ramazan Altın, A. Cumhur Kınacı
doaj   +1 more source

O-ODM Framework for Object-Relational Databases

open access: yesInternational Journal of Interactive Multimedia and Artificial Intelligence, 2012
Object-Relational Databases introduce new features which allow manipulating objects in databases.At present, many DBMS offer resources to manipulate objects in database, but most application developers just map class to relations tables, failing to ...
Carlos Alberto Rombaldo Jr.   +2 more
doaj   +1 more source

An Improved Algorithm for Generating Database Transactions from Relational Algebra Specifications [PDF]

open access: yes, 2009
Alloy is a lightweight modeling formalism based on relational algebra. In prior work with Fisler, Giannakopoulos, Krishnamurthi, and Yoo, we have presented a tool, Alchemy, that compiles Alloy specifications into implementations that execute against ...
Anamaria Martins Moreira   +10 more
core   +4 more sources

Supporting Schema References in Keyword Queries Over Relational Databases

open access: yesIEEE Access, 2023
Relational Keyword Search (R-KwS) systems enable naive/informal users to explore and retrieve information from relational databases without knowing schema details or query languages.
Paulo Martins   +4 more
doaj   +1 more source

Solving equations in the relational algebra [PDF]

open access: yes, 2003
Enumerating all solutions of a relational algebra equation is a natural and powerful operation which, when added as a query language primitive to the nested relational algebra, yields a query language for nested relational databases, equivalent to the ...
Biskup, Joachim   +3 more
core   +1 more source

Comparing the performance of object and object relational database systems on objects of varying complexity [PDF]

open access: yes, 2012
This is the first published work to compare the performance of object and object relational database systems based on the object's complexity. The findings of this research show that the performance of object and object relational database systems are ...
Bryant, CH, Kalantari, R
core   +1 more source

Preferences in Temporal Relational Databases

open access: yesIEEE Access
Despite the huge amount of work devoted to the treatment of time within the relational context, some relevant phenomena remain to be fully addressed. We focus on one of them, i.e., temporal indeterminacy with preferences.
Luca Anselma, Paolo Terenziani
doaj   +1 more source

Integration of Relational and Graph Databases Functionally

open access: yesFoundations of Computing and Decision Sciences, 2019
In today’s multi-model database world there is an effort to integrate databases expressed in different data models. The aim of the article is to show possibilities of integration of relational and graph databases with the help of a functional data model ...
Pokorný Jaroslav
doaj   +1 more source

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