Results 21 to 30 of about 319,043 (311)
A Novel Automatic Relational Database Normalization Method
Acta Informatica Pragensia, 2022 The increase in data diversity and the fact that database design is a difficult process make it practically impossible to design a unique database schema for all datasets encountered.
Emre Akadal, Mehmet Hakan Satman
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A Trichotomy in the Complexity of Counting Answers to Conjunctive Queries [PDF]
, 2015 Conjunctive queries are basic and heavily studied database queries; in relational algebra, they are the select-project-join queries. In this article, we study the fundamental problem of counting, given a conjunctive query and a relational database, the ...
Chen, Hubie, Mengel, Stefan
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Database Slicing on Relational Databases
Acta 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 ...
David Tengeri, Ferenc Havasi
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Staircase Join: Teach a Relational DBMS to Watch its (Axis) Steps [PDF]
, 2003 Relational query processors derive much of their effectiveness from the awareness of specific table properties like sort order, size, or absence of duplicate tuples.
Grust, Torsten +2 more
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BMC Medical Informatics and Decision Making, 2017 Background The objective of this research is to compare the relational and non-relational (NoSQL) database systems approaches in order to store, recover, query and persist standardized medical information in the form of ISO/EN 13606 normalized Electronic
Ricardo Sánchez-de-Madariaga +6 more
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THE OBJECT-ORIENTED DATABASES APPROACH REPRESENT A TYPICAL SOLUTION FOR INTEGRATED APPLICATIONS
Journal of Kufa for Mathematics and Computer, 2010 numbers, short text, and dates. With the advent of powerful and affordable multimedia computers, people increasingly need databases to store more complex objects. Typical objects include graphics, sound, and video clips.
Yahya Mahdi Hadi Al-mayali
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Comparing the performance of object and object relational database systems on objects of varying complexity [PDF]
, 2012 This is the first published work to compare the performance of object and object relational database systems based on the object's complexity. The findings of this research show that the performance of object and object relational database systems are ...
Bryant, CH, Kalantari, R
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Oracle 19c, SQL Server 2019, Postgresql 12 and MySQL 8 database systems comparison
Journal of Computer Sciences Institute, 2020 This article presents a comparative analysis of four popular database technologies. Commercial Oracle Database and SQL Server systems are compared with open source database management systems: PostgreSQL and MySQL.
Arkadiusz Solarz, Tomasz Szymczyk
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Recommendations for Evolving Relational Databases [PDF]
, 2020 Relational databases play a central role in many information systems. Their schemas contain structural and behavioral entity descriptions. Databases must continuously be adapted to new requirements of a world in constant change while: (1) relational database management systems (RDBMS) do not allow inconsistencies in the schema; (2) stored procedure ...
Delplanque, Julien +3 more
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Working with Legacy Relational Data in A Graph-Based World
International Journal of Population Data Science, 2020 The Next Generation Linkage Management System (NGLMS) was designed around keeping all data in a graph database. However, this constraint, while easily achievable for greenfield projects and/or new data linkage units, may not be easily met where legacy ...
James Farrow
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