Results 31 to 40 of about 20,419 (167)

INDEXES SELECTION FOR BLOCKS OF RELATED SQL QUERIES [PDF]

open access: yesApplied Computer Science, 2012
This paper discusses the problem of minimizing the response time for a given database workload by a proper choice of indexes. The main objective of our contribution is to illustrate the database queries as a group and search for good indexes for the ...
Radosław BOROŃSKI
doaj  

Data Management: 25 Years of Forecasts

open access: yesТруды Института системного программирования РАН, 2018
In October 2013, the eighth meeting of researchers in the field of databases was held. The first such meeting took place in February 1988, so that 25 years passed between them.
S. D. Kuznetsov
doaj   +1 more source

Effect of semantic distance on learning structured query language: An empirical study

open access: yesFrontiers in Psychology, 2022
Students of database courses usually encounter difficulties in learning structured query language (SQL). Numerous studies have been conducted to improve how students learn SQL. However, learning SQL remains difficult. This study analyzed the difficulties
Shin-Shing Shin
doaj   +1 more source

The Digital Edition of the Becerro Galicano de San Millán de la Cogolla

open access: yesRIDE, 2014
This is a review of the digital edition of the Becerro Galicano of San Millán de la Cogolla, one of the oldest medieval cartularies in Spain and one of the most important sources for the study of Christian Spain between the 8th and 12th century.
Francisco Javier Álvarez Carbajal
doaj   +1 more source

Multi-Model Database Systems: The State of Affairs [PDF]

open access: yesAnnals of Dunarea de Jos University. Fascicle I : Economics and Applied Informatics, 2020
Nowadays, more and more organizations are coping with a very large volume of data in different formats and a very high growth rate. Under these conditions, relational databases are no longer sufficient for data management within these organizations, as ...
Gianina MIHAI
doaj  

OpenIVM: a SQL-to-SQL Compiler for Incremental Computations

open access: yesCompanion of the 2024 International Conference on Management of Data
This demonstration presents a new Open Source SQL-to-SQL compiler for Incremental View Maintenance (IVM). While previous systems, such as DBToaster, implemented computational functionality for IVM in a separate system, the core principle of OpenIVM is to make use of existing SQL query processing engines and perform all IVM computations via SQL.
Ilaria Battiston   +2 more
openaire   +2 more sources

Web applications and data: achieving abstraction and scalability

open access: yesТруды Института системного программирования РАН, 2018
Nowadays it has become clear that no data store is all-purpose. SQL-based systems have been prevalent for several decades though this approach leads to serious issues in modern high scalability architectures.
Andrey Poskonin
doaj   +1 more source

Relational model of a communication network node device for telecommunication systems

open access: yesInformaciâ i Innovacii
Relevance. Modern development of telecommunication networks requires technologies for constructing an analytical system of operational support of the network using inventory, technological and analytical information on communication nodes for designing ...
A. V. Sinitsyn   +3 more
doaj   +1 more source

Ranking of Illegal Buildings Close to Rivers: A Proposal, Its Implementation and Preliminary Validation

open access: yesISPRS International Journal of Geo-Information, 2019
Illegal buildings (IBs) are a dramatic problem in developing countries due to the population explosion, but, at the same time, they represent an unsolved issue in several states usually called advanced (as, for instance, Italy).
Paolino Di Felice
doaj   +1 more source

SQL/PL-SQL Booklet

open access: yes, 2020
SQL & PL-SQL ...
openaire   +1 more source

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