Results 41 to 50 of about 663,961 (238)
Genetic Algorithm for Relational Database Optimization in Reducing Query Execution Time
Scientific Journal of Informatics, 2018 The relational database is defined as the database by connecting between tables. Each table has a collection of information. The information is processed in the database by using queries, such as data retrieval, data storage, and data conversion.
Kukuh Triyuliarno Hidayat +2 more
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Fuzzy relations and fuzzy relational databases
Computers & Mathematics with Applications, 1991 AbstractThis paper deals with the connections existing between fuzzy set theory and fuzzy relational databases. Our new result dealing with fuzzy relations is how to calculate the greatest lower bound (glb) of two similarity relations. Our main contributions in fuzzy relational databases are establishing from fuzzy set theory what a fuzzy relational ...
Austin Melton, Sujeet Shenoi
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Incremental View Maintenance for Deductive Graph Databases Using Generalized Discrimination Networks [PDF]
EPTCS 231, 2016, pp. 57-71, 2016 Nowadays, graph databases are employed when relationships between entities are in the scope of database queries to avoid performance-critical join operations of relational databases. Graph queries are used to query and modify graphs stored in graph databases.
arxiv +1 more source
ON THE DENSE FAMILIES IN THE RELATIONAL DATAMODEL
ASEAN Journal on Science and Technology for Development, 2017 In this paper, dense families of relation schemes are introduced. We characterize minimal keys of relation schemes in terms of dense families. Note that, the dense families of database relations were introduced by Jarvinen [6].
Vu Duc Thy, Nguyen Hoang Son
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A Systematic Method for On-The-Fly Denormalization of Relational Databases [PDF]
arXiv, 2020 Normalized relational databases are a common method for storing data, but pulling out usable denormalized data for consumption generally requires either direct access to the source data or creation of an appropriate view or table by a database administrator.
arxiv
Extensible Database Simulator for Fast Prototyping In-Database Algorithms [PDF]
arXiv, 2022 With the rapid increasing of data scale, in-database analytics and learning has become one of the most studied topics in data science community, because of its significance on reducing the gap between the management and the analytics of data. By extending the capability of database on analytics and learning, data scientists can save much time on ...
arxiv
Database relations with null values [PDF]
Journal of Computer and System Sciences, 1982 AbstractA new formal approach is proposed for modeling incomplete database information by means of null values. The basis of our approach is an interpretation of nulls which obviates the need for more than one type of null. The conceptual soundness of this approach is demonstrated by generalizing the formal framework of the relational data model to ...
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Sensors, 2022 An objective stereo video quality assessment (SVQA) strives to be consistent with human visual perception while ensuring a low time and labor cost of evaluation.
Fenghao Gu, Zhichao Zhang
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A strategy for the execution of copy and delete operations in the tree of objects
Моделирование и анализ информационных систем, 2011 The paper discusses some general rules for organizing database objects into hierarchical structures. It describes different kinds of relations between objects, and the role that relations play in the organization of such structures.
A. V. Mayorov
doaj
Ranking relations between diseases, drugs and genes for a curation task
Journal of Biomedical Semantics, 2012 Background One of the key pieces of information which biomedical text mining systems are expected to extract from the literature are interactions among different types of biomedical entities (proteins, genes, diseases, drugs, etc.).
Clematide Simon, Rinaldi Fabio
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