Results 31 to 40 of about 20,287 (166)

“Desktop Scientometrics”: una metodología para el uso de datos procedentes de WoS mediante el programa estadístico R

Revista Española de Documentación Científica, 2016
Se presenta una metodología de trabajo que permite obtener y tratar datos de la Web of Science con fines bibliométricos. Se usa como herramienta el software estadístico R para crear funciones que faciliten el trabajo bibliométrico; adicionalmente se ...
Preiddy Efrain-García, Carlos García-Zorita   +1 more
doaj   +1 more source

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

Frontiers 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

Relation-Aware Graph Transformer for SQL-to-Text Generation

Applied Sciences, 2021
Generating natural language descriptions for structured representation (e.g., a graph) is an important yet challenging task. In this work, we focus on SQL-to-text, a task that maps a SQL query into the corresponding natural language question.
Da Ma, Xingyu Chen, Ruisheng Cao, Zhi Chen, Lu Chen, Kai Yu   +5 more
doaj   +1 more source

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

Companion 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, Kriti Kathuria, Peter Boncz   +2 more
openaire   +2 more sources

Rough set-based rule generation and Apriori-based rule generation from table data sets II: SQL-based environment for rule generation and decision support

CAAI Transactions on Intelligence Technology, 2019
This study follows the previous study entitled ‘Rough set-based rule generation and Apriori-based rule generation from table data sets: A survey and a combination’, and this is the second study on ‘Rough set-based rule generation and Apriori-based rule ...
Hiroshi Sakai, Zhiwen Jian
doaj   +1 more source

SQL/PL-SQL Booklet

, 2020
SQL & PL-SQL ...
openaire   +1 more source

Measures in SQL

Companion of the 2024 International Conference on Management of Data
To be published in SIGMOD-Companion 24, June 9-15, 2024, Santiago, AA, Chile; 10 pages; updated with corrections as of 2024/05/31, and for formatting as of 2025/01 ...
Julian Hyde, John Fremlin
openaire   +2 more sources

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

Annals 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  

Norma Z39.50, actualidad, posibilidades. ¿Es necesario un cambio de actitud?

Revista Española de Documentación Científica, 1998
La tecnología de los sistemas basados en la norma Z39.50 ofrece numerosas posibilidades, a priori bastante prometedoras. Conectividad de sistemas, recuperación de información muy estructurada, redefinición de aplicaciones (robots de búsqueda, agentes...),
A. de la Rosa Piñero, J. A. Senso Ruiz, R. Eíto Brun   +2 more
doaj   +1 more source

Survey of Just-in-Time Query Compilation Methods

Труды Института системного программирования РАН, 2018
Data processing systems have been traditionally optimized for I/O, mainly because, until pretty recently, disk storage has been the most affordable type of storage and the most prevalent one.
E. Y. Sharygin, R. A. Buchatskiy
doaj   +1 more source