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A UML Profile for Variety Awareness in Multidimensional Design

Sandro Bimonte, Houssam Bazza, Jean Laneurit, Stefano Rizzi, Hassan Badir
2022 International Workshop on Data Warehousing and OLAP  
We also provide a validation of our UML profile by ranking it against other meta-models based on a set of quality metrics.  ...  Variety and variability are an inherent source of information wealth in schemaless sources, and executing OLAP sessions on multidimensional data in their presence has recently become an object of research  ...  PROOF-OF-CONCEPT We have implemented V-ICSOLAP using Papyrus, an open-source UML tool based on Eclipse.  ... 
dblp:conf/dolap/BimonteBLRB22 fatcat:tucoimbmtbd4haf2euzuiwz2r4

Graph data models, query languages and programming paradigms

Alin Deutsch, Yannis Papakonstantinou
2018 Proceedings of the VLDB Endowment  
Numerous databases support semi-structured, schemaless and heterogeneous data, typically in the form of graphs (often restricted to trees and nested data).  ...  Furthermore, the query languages often fall short of full-fledged semistructured and graph query language capabilities, when compared to the yardsticks set by prior academic efforts.  ...  These databases generally support semi-structured, schemaless and heterogeneous data, which is the focus of this tutorial.  ... 
doi:10.14778/3229863.3229879 fatcat:qkx6nug5nna73jbdkoap6tighe

Schemaless and structureless graph querying

Shengqi Yang, Yinghui Wu, Huan Sun, Xifeng Yan
2014 Proceedings of the VLDB Endowment  
Querying complex graph databases such as knowledge graphs is a challenging task for non-professional users.  ...  In this paper, we introduce a novel framework enabling schemaless and structureless graph querying (SLQ), where a user need not describe queries precisely as required by most databases.  ...  The labeled edges indicate various relationships. (2) YAGO2 [3] is a knowledge base gathered from several open sources.  ... 
doi:10.14778/2732286.2732293 fatcat:dn6hgjwzsjcoratfatleqoim44

Access control technologies for Big Data management systems: literature review and future trends

Pietro Colombo, Elena Ferrari
2019 Cybersecurity  
We then describe the state of the art and discuss open research issues.  ...  Data security and privacy issues are magnified by the volume, the variety, and the velocity of Big Data and by the lack, up to now, of a reference data model and related data manipulation languages.  ...  heterogeneous and schemaless. • Context management.  ... 
doi:10.1186/s42400-018-0020-9 fatcat:2wyaml2ffnfpjhof6faknr3wle

DB&IR

Gerhard Weikum
2007 Proceedings of the 2007 ACM SIGMOD international conference on Management of data - SIGMOD '07  
With an explicit knowledge base of this kind, it should be possible to answer advanced knowledge queries such as: which physicist survived two world wars and died after all of his four children?  ...  Such XML data inevitably exhibits heterogeneous structures and tags and, therefore, cannot be adequately searched using matching-based DB query languages like XPath or XQuery.  ... 
doi:10.1145/1247480.1247484 dblp:conf/sigmod/Weikum07 fatcat:5ncaqde7ujfadfmniqfbrjymni

Information Management for Genome Level Bioinformatics

Norman W. Paton, Carole A. Goble
2001 Very Large Data Bases Conference  
BioNavigator: type based linking of resources. Kleisli: semi-structured database querying. DiscoveryLink: database oriented middleware. TAMBIS: ontology based integration.  ...  The Interoperable Informatics Infrastructure Consortium (I3C) Open XML-in, XML-out paradigm Services-based for accessing remote analysis services http://i3c.open-bio.org/ For yeast, by way of illustration  ... 
dblp:conf/vldb/PatonG01 fatcat:yh7mzvvc4zefrmzxiu55nuj6t4

ADEpedia: a scalable and standardized knowledge base of Adverse Drug Events using semantic web technology

Guoqian Jiang, Harold R Solbrig, Christopher G Chute
2011 AMIA Annual Symposium Proceedings  
We proposed a comprehensive framework for building a standardized ADE knowledge base (called ADEpedia) through combining ontology-based approach with semantic web technology.  ...  The framework comprises four primary modules: 1) an XML2RDF transformation module; 2) a data normalization module based on NCBO Open Biomedical Annotator; 3) a RDF store based persistence module; and 4  ...  Finally, we will make the ADEpedia knowledge base open online for public access in near future though we are aware that we will have to have an appropriate mechanism for dealing with the proprietary issue  ... 
pmid:22195116 pmcid:PMC3243176 fatcat:s3l2726pdjhtrpqi2leyznqhxi

Graph BI & Analytics: Current State and Future Challenges [chapter]

Amine Ghrab, Oscar Romero, Salim Jouili, Sabri Skhiri
2018 Lecture Notes in Computer Science  
In an increasingly competitive market, making well-informed decisions requires the analysis of a wide range of heterogeneous, large and complex data.  ...  This paper presents the current status and open challenges of graph BI and analytics, and motivates the need for new warehousing frameworks aware of the topological nature of graphs.  ...  Finally, the W3C recommendation to query knowledge graphs is the SPARQL Protocol and RDF Query Language (SPARQL).  ... 
doi:10.1007/978-3-319-98539-8_1 fatcat:56fgfclobveifcbkwvbyejt5pi

Database techniques for linked data management

Andreas Harth, Katja Hose, Ralf Schenkel
2012 Proceedings of the 2012 international conference on Management of Data - SIGMOD '12  
The goal of the tutorial is to introduce, motivate, and detail techniques for querying heterogeneous structured data from across the web.  ...  In the past few years we have witnessed a tremendous growth in Linked Data publishing on the web, leading to tens of billions of data items published online.  ...  Also, Linked Data inherits the so-called open-world assumption, which favors a lenient type of semantics drawing conclusions based on data to reconcile potential inconsistencies rather than integrity checking  ... 
doi:10.1145/2213836.2213909 dblp:conf/sigmod/HarthHS12 fatcat:pbxgg3dnavbc5onjn2e4lmwu54

A New Algorithm for Storing and Migrating Data Modelled by Graphs

Zakariyaa Ait El Mouden, Abdeslam Jakimi
2020 International Journal of Online and Biomedical Engineering (iJOE)  
In term of variety, NoSQL databases store heterogeneous data without being obliged to respect a predefined schema such as the case of relational and object-relational databases.  ...  Also, in term of velocity, many researches compared the execution time of different transactions and proved that NoSQL databases are the perfect solution for real-time applications.  ...  GEXF (Graph Exchange XML Format) is an open source document-oriented format based on XML and used to describe and store graphs and complex networks.  ... 
doi:10.3991/ijoe.v16i11.15545 fatcat:p2uoo3fydrbx3crylanhfulkom

Supporting the Linked Data Life Cycle Using an Integrated Tool Stack [chapter]

Bert Van Nuffelen, Valentina Janev, Michael Martin, Vuk Mijovic, Sebastian Tramp
2014 Lecture Notes in Computer Science  
The core of a Linked Data application is the processing of the knowledge expressed as Linked Data.  ...  Furthermore we will elaborate how the stack can be used to support a knowledge domain. The illustrated domain is statistical data.  ...  LOD2 tools such as SILK and Limes facilitate mapping between knowledge bases, while LOD Open Refine can be used to enrich the data with descriptions from DBpedia or to reconcile with other information  ... 
doi:10.1007/978-3-319-09846-3_6 fatcat:dnn5ivd4czardemfkjhul32hc4

Currency Conversion the Linked Data Way

Alex Stolz, Martin Hepp
2013 Extended Semantic Web Conference  
In many business applications that could be built on the basis of Linked Open Data, the conversion of monetary amounts from one currency to another is a much-needed functionality.  ...  In this paper, we propose to integrate currency conversion functionality from open Web APIs into the Linked Open Data (LOD) cloud in a conceptually clean, scalable way that (1) adheres to the LOD design  ...  Parts of the work presented in this paper have been supported by the German Federal Ministry of Research (BMBF) by a grant under the KMU Innovativ program as part of the Intelligent Match project (FKZ  ... 
dblp:conf/esws/StolzH13 fatcat:akdvyzugnbf3rpfe35kl4ut2gy

An overview of graph databases and their applications in the biomedical domain

Santiago Timón-Reina, Mariano Rincón, Rafael Martínez-Tomás
2021 Database: The Journal of Biological Databases and Curation  
Over the past couple of decades, the explosion of densely interconnected data has stimulated the research, development and adoption of graph database technologies.  ...  Because of the interconnected nature of its data, the biomedical domain has been one of the early adopters of graph databases, enabling more natural representation models and better data integration workflows  ...  Biological knowledge graphs While there exist multiple definitions of Knowledge Graphs (KGs) that depend on the application context (115) , we can define them as large, heterogeneous knowledgebases modeled  ... 
doi:10.1093/database/baab026 pmid:34003247 pmcid:PMC8130509 fatcat:xku5npedwzgs3ayzsuvz6iattq

Query processing in multistore systems: an overview

Carlyna Bondiombouy, Patrick Valduriez
2016 International Journal of Cloud Computing  
Section 5 concludes and discusses open issues.  ...  Finally, in Section 4, we analyze the three kinds of multistore systems, based on their architecture, data model, query languages and query processing techniques.  ...  Heterogeneous Query Optimization In addition to heterogeneous cost modeling, multidatabase query optimization must deal with the issue of the heterogeneous computing capabilities of data sources.  ... 
doi:10.1504/ijcc.2016.10001884 fatcat:jpuixv6mxzhmdkuqrmqbgbbl24

Query processing in multistore systems: an overview

Carlyna Bondiombouy, Patrick Valduriez
2016 International Journal of Cloud Computing  
Section 5 concludes and discusses open issues.  ...  Finally, in Section 4, we analyze the three kinds of multistore systems, based on their architecture, data model, query languages and query processing techniques.  ...  Heterogeneous Query Optimization In addition to heterogeneous cost modeling, multidatabase query optimization must deal with the issue of the heterogeneous computing capabilities of data sources.  ... 
doi:10.1504/ijcc.2016.080903 fatcat:etteedwysbcyfidbaeh7x2lrne
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