Results 1 to 10 of about 2,928,846 (178)

Extending the database relational model to capture more meaning

open access: yesACM Transactions on Database Systems, 1979
E F Codd, David K Hsiao
exaly   +2 more sources

Converting Relational Databases into Object-relational Databases. [PDF]

open access: yesThe Journal of Object Technology, 2010
This paper proposes an approach for migrating existing Relational DataBases (RDBs) into Object-Relational DataBases (ORDBs). The approach is superior to existing proposals as it can generate not only the target schema but also the data instances. The solution takes an existing RDB as input, enriches its metadata representation with required semantics ...
Abdelsalam M. Maatuk   +2 more
openaire   +1 more source

Database Slicing on Relational Databases

open access: yesActa Cybernetica, 2014
Many software systems today use databases to permanently store their data. Testing, bug finding and migration are complex problems in the case of databases that contain many records. Here, our method can speed up these processes if we can select a smaller piece of the database (called a slice) that contains all of the records belonging to the slicing ...
Dávid Tengeri, Ferenc Havasi
openaire   +1 more source

A Unified Metamodel for NoSQL and Relational Databases [PDF]

open access: yesInformation Systems, 2021
The Database field is undergoing significant changes. Although relational systems are still predominant, the interest in NoSQL systems is continuously increasing.
Carlos Javier Fernández Candel   +2 more
semanticscholar   +1 more source

On Embeddings in Relational Databases

open access: yesCoRR, 2020
We address the problem of learning a distributed representation of entities in a relational database using a low-dimensional embedding. Low-dimensional embeddings aim to encapsulate a concise vector representation for an underlying dataset with minimum loss of information.
Siddhant Arora, Srikanta Bedathur
openaire   +2 more sources

Data Mining Using Relational Database Management Systems [PDF]

open access: yes, 2006
Software packages providing a whole set of data mining and machine learning algorithms are attractive because they allow experimentation with many kinds of algorithms in an easy setup.
Beibei, Zou   +4 more
core   +1 more source

Improving the Deductive System DES with Persistence by Using SQL DBMS's [PDF]

open access: yes, 2015
This work presents how persistent predicates have been included in the in-memory deductive system DES by relying on external SQL database management systems.
Sáenz-Pérez, Fernando
core   +4 more sources

A Comparative Study of NoSQL and Relational Database

open access: yes, 2017
Relational Database and NoSQL are competing types of database models. The former has been in existence since 1979 and the latter since the year 2000. The demands of modern applications especially in web 2.0, 3.0 and big data have made NoSQL a popular ...
D. Kunda, Hazael Phiri
semanticscholar   +1 more source

Beyond relational databases [PDF]

open access: yesCommunications of the ACM, 2008
There is more to data access than SQL.
openaire   +1 more source

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