Results 11 to 20 of about 5,206,986 (370)
Computing the inverse of cardinal direction relations between regions
Journal of Intelligent Systems, 2022 The inversion of directions is an important operation with directions which plays an important role in qualitative spatial reasoning and spatial queries. In this work, we address on the inversion operation of the basic cardinal direction relations in the
Wang Miao +5 more
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Research and Implementation of Document-Relational Data Query Execution Tech-nology
Jisuanji kexue yu tansuo, 2020 With the arrival of the era of big data, Internet applications have produced abundant data types. Integ-rating storage, query and organization of data with various structures is a research hotspot of large data management system.
MA Zhicheng, YUAN Haifeng, GU Yang, LIU Yaru, ZHANG Xiao
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Visualization of Relational Databases
Digital Platform: Information Technologies in Sociocultural Sphere, 2022 The purpose of the article is to demonstrate the relational databases visualization algorithm using MS Power BI software products in MS Excel. The research methodology is cloud information processing technologies. The novelty of the study is the implementation of the relational database visualization algorithm using MS Power BI software products in MS ...
Bulyha Kostiantin +2 more
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Representation and Reasoning for Model of 3DR46 in Complex 3D Space
Jisuanji kexue yu tansuo, 2020 To remedy the deficiency of the existing methods on 3D direction relations, the 3DR46 direction relations model is proposed. The model can represent and distinguish 246 complex 3D direction relations. To process the dynamic of 3D direction relations, the
HAO Xiaohong, LI Song, HAO Zhongxiao
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Belnap-Dunn logic and query answering in inconsistent databases with null values [PDF]
Scientific Annals of Computer Science vol. 33(2):159-192 (2023), 2023 This paper concerns an expansion of first-order Belnap-Dunn logic, named $\mathrm{BD}^{\supset,\mathsf{F}}$, and an application of this logic in the area of relational database theory. The notion of a relational database, the notion of a query applicable to a relational database, and several notions of an answer to a query with respect to a relational ...
arxiv +1 more source
Uniform Reliability of Self-Join-Free Conjunctive Queries [PDF]
Logical Methods in Computer Science, 2022 The reliability of a Boolean Conjunctive Query (CQ) over a tuple-independent probabilistic database is the probability that the CQ is satisfied when the tuples of the database are sampled one by one, independently, with their associated probability.
Antoine Amarilli, Benny Kimelfeld
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COVID-19 in Relation to Hyperglycemia and Diabetes Mellitus
Frontiers in Cardiovascular Medicine, 2021 Coronavirus disease 2019 (COVID-19), triggered by the severe acute respiratory syndrome-coronavirus 2 (SARS-CoV-2), may lead to extrapulmonary manifestations like diabetes mellitus (DM) and hyperglycemia, both predicting a poor prognosis and an increased
H. Al-kuraishy +5 more
semanticscholar +1 more source
Formatting European security integration through database interoperability
European Security, 2022 In this article, we explore the security politics of EU database interoperability, inquiring how knowledge infrastructures underpin European security integration. Sitting at the intersection of Science and Technology Studies (STS) and critical approaches
R. Bellanova, Georgios Glouftsios
semanticscholar +1 more source
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
openaire +5 more sources
BMC Cancer, 2021 Clear cell renal cell carcinoma is susceptible to ferroptosis, and immunotherapy is recently recommended as a priority for the initial treatment of metastatic clear cell renal carcinoma.
Yan-hua Mou +5 more
semanticscholar +1 more source