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Drawing Database Schemas with DBdraw [PDF]

open access: yes, 2002
DBdraw is an application that allows the user to automatically produce drawings of database schemas according to a drawing standard that is well accepted by the database community. The drawing engine of DBdraw is based on the GDToolkit library.
Di Battista G.   +3 more
openaire   +3 more sources

Synthesizing database programs for schema refactoring [PDF]

open access: yesProceedings of the 40th ACM SIGPLAN Conference on Programming Language Design and Implementation, 2019
Many programs that interact with a database need to undergo schema refactoring several times during their life cycle. Since this process typically requires making significant changes to the program's implementation, schema refactoring is often non-trivial and error-prone.
Wang, Yuepeng   +3 more
openaire   +2 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

Hierarchical Schema Representation for Text-to-SQL Parsing With Decomposing Decoding

open access: yesIEEE Access, 2019
Most of existing studies on parsing natural language (NL) for constructing structured query language (SQL) do not consider the complex structure of database schema and the gap between NL and SQL query.
Meina Song, Zecheng Zhan, Haihong E.
doaj   +1 more source

Schema Versioning in Databases: A Literature Review

open access: yesComputing Open
Changes involving the database schema are unavoidable events that sometimes occur in data-centric systems, due to many reasons like evolution of user requirements, corrective maintenance, improvement of the current schema with the addition of new ...
Zouhaier Brahmia   +2 more
doaj   +1 more source

Applying TSSL in database schema modeling: Visualizing the syntax of gradual transitions

open access: yesJournal of Technology and Science Education, 2018
Since database conceptual modeling is a complex cognitive activity, finding an appropriate pedagogy to deliver the topic to novice database designers is a challenge for Information Systems (IS) educators.
Adi Katz
doaj   +1 more source

SCHEMA VERSIONING FOR MULTITEMPORAL RELATIONAL DATABASES

open access: yesInformation Systems, 1997
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
C De Castro, F Grandi, M Scalas
openaire   +4 more sources

Methodology for modeling a column-oriented database with Cassandra

open access: yesInternational Journal of Computer Engineering and Data Science, 2021
Cassandra data model is based on a dynamic schema, with a column-oriented data model. This means that, unlike a relational database, it is not necessary to model all the columns since a row potentially does not have the same set of columns.
Ahmed DOURHRI   +2 more
doaj   +4 more sources

Structured Query Translation in Peer to Peer Database Sharing Systems

open access: yesData Science Journal, 2009
This paper presents a query translation mechanism between heterogeneous peers in Peer to Peer Database Sharing Systems (PDSSs). A PDSS combines a database management system with P2P functionalities. The local databases on peers are called peer databases.
Mehedi Masud, Fazel Keshtkar
doaj   +1 more source

An Investigation of Alternatives to Transform Protein Sequence Databases to a Columnar Index Schema

open access: yesAlgorithms, 2021
Mass spectrometers enable identifying proteins in biological samples leading to biomarkers for biological process parameters and diseases. However, bioinformatic evaluation of the mass spectrometer data needs a standardized workflow and system that ...
Roman Zoun   +7 more
doaj   +1 more source

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