Results 21 to 30 of about 2,508,257 (346)
An Approach For Transforming of Relational Databases to OWL Ontology [PDF]
arXiv.org, 2015 Rapid growth of documents, web pages, and other types of text content is a huge challenge for the modern content management systems. One of the problems in the areas of information storage and retrieval is the lacking of semantic data.
M. Dadjoo, E. Kheirkhah
semanticscholar +1 more source
A relation merging technique for relational databases [PDF]
[1992] Eighth International Conference on Data Engineering, 2003 A merging technique for relational schemas consisting of relation-schemes, key dependencies, referential integrity constraints, and null constraints is presented. The author examines the conditions required for using this technique with relational database management systems that provide different mechanisms for maintaining null and referential ...
openaire +2 more sources
Comparative analysis of selected databases on the example of a proprietary web application
Journal of Computer Sciences Institute, 2023 Database performance is one of the most important factors affecting the usability of the system. Therefore, the authors of the article decided to examine 3 popular database systems: MySQL, MS SQL and PostgreSQL, analyzing their performance.
Łukasz Przychodzień +2 more
doaj +1 more source
Solving equations in the relational algebra [PDF]
, 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
Considerations on NoSQL Databases [PDF]
Revista Română de Informatică și Automatică, 2018 This paper aims to present some considerations on non-relational databases (called NoSQL) that are increasingly being used by applications (especially the Web, such as Youtube, Amazon, Google and Facebook) that both have to store an impressive volume ...
Dragoş NICOLAU
doaj
Performance analysis of relational databases MySQL, PostgreSQL and Oracle using Doctrine libraries
Journal of Computer Sciences Institute, 2022 In modern applications, databases perform a very important function but the choice of a database system and additional libraries may affect the speed of the operations.
Marcin Choina +1 more
doaj +1 more source
Prioritized Repairing and Consistent Query Answering in Relational Databases [PDF]
, 2011 A consistent query answer in an inconsistent database is an answer obtained in every (minimal) repair. The repairs are obtained by resolving all conflicts in all possible ways.
A Fuxman +14 more
core +7 more sources
Comparison between Relational and NoSQL Databases [PDF]
Annals 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
Journal 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
Pattern based processing of XPath queries [PDF]
, 2008 As the popularity of areas including document storage and distributed systems continues to grow, the demand for high performance XML databases is increasingly evident.
Marks, Gerard, Roantree, Mark
core +2 more sources