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SIADBDD: an integrated tool to design distributed databases KU Leuven
Nowadays, distributed database (DDB) systems are often better tailored to the structure and needs of organizations than their centralized counterparts. Among the main concerns and constraints when designing DDBs are effort and time consumption, which are limited and valuable resources. Due to the complexity of the problem, most of the proposed solutions divide the design process into two parts: the fragmentation and the allocation of the ...
SIADBDD: an integrated tool to design distributed databases KU Leuven
Nowadays, distributed database (DDB) systems are often better tailored to the structure and needs of organizations than their centralized counterparts. Among the main concernsand constraints when designing DDBs are effort and time consumption, which are limited and valuable resources. Due to the complexity of the problem, most of the proposedsolutions divide the design process into two parts: the fragmentation and the allocation of the fragments ...
Distributed incremental fingerprint identification with re duce d database penetration rate using a hierarchical classification based on feature fusion and selection Vlaams Instituut voor Biotechnologie Universiteit Antwerpen
Scalable Multi-Query Optimization for Exploratory Queries over Federated Scientific Databases Universiteit Hasselt
The diversity and large volumes of data processed in the Natural Sciences today has led to a proliferation of highly-specialized and autonomous scientific databases with inherent and often intricate relationships. As a user-friendly method for querying this complex, ever-expanding network of sources for correlations, we propose exploratory queries. Exploratory queries are loosely-structured, hence requiring only minimal user knowledge of the ...
Advanced Data Modeling and Mapping Support for NoSQL Databases KU Leuven
In recent years, the database landscape has become vastly diverse as these systems have to handle increasingly large volumes of heterogeneous data, a requirement which shows several limitations in traditional relational database systems for being too rigid, and unable to scale horizontally. As a solution, "not only SQL" or NoSQL databases emerged, an umbrella term for database systems that typically provide benefits in the form of more flexible ...
Scalable multi-query optimization over federated scientific databases Universiteit Hasselt
We will not focus on the actual integration problem. Instead we focus on how to efficiently evaluate distributed queries. One of the key characteristics of the databases discussed in Section 1.2 is that sources are frequently updated. Updates lead to interesting challenges even if one is interested in simple queries. Indeed, answers to queries may vary over time as more data becomes available. However, it is cumbersome to repeat all queries over ...
Age-specific vaccination coverage estimates for influenza, human papillomavirus and measles containing vaccines from seven population-based healthcare databases from four EU countries - The ADVANCE project Universiteit Hasselt
Background: The Accelerated Development of VAccine beNefit-risk Collaboration in Europe (ADVANCE) is a public-private collaboration aiming to develop and test a system for rapid benefit-risk monitoring of vaccines using existing healthcare databases in Europe. We estimated vaccine coverage from electronic healthcare databases as part of a fit-for-purpose assessment for vaccine benefit-risk studies. Methods: A retrospective dynamic cohort study ...
Regional soil organic carbon stocks: Enhancing the usability of soil databases KU Leuven
Storage of soil organic carbon (SOC) is an essential function of ecosystems underpinning the delivery of multiple services to society: e.g. the production of food, wood, bio-energy and water and the regulation of the global climate, nutrient availability and the hydrological cycle. Whereas SOC content (%) is part of the routine measurements in general-purpose soil survey projects and in monitoring schemes of agricultural and forest soils, the ...