Search Results - subject:"Query Processing"

An Encryption Methodology for Enabling the Use of Data Warehouses on the Cloud

Lopes, Claudivan Cruz; Cesário-Times, Valéria; … - In: International Journal of Data Warehousing and Mining (IJDWM) 14 (2018) 4, pp. 38-66

A cloud data warehouse (cloud DW) is a subject-oriented, integrated, time-variant, voluminous, nonvolatile and multidimensional distributed database that is hosted in a cloud. A solution to ensure data confidentiality for a cloud DW is cryptography. In this article, the authors propose an...

Persistent link: https://www.econbiz.de/10012044251

Extended Adaptive Join Operator with Bind-Bloom Join for Federated SPARQL Queries

Oguz, Damla; Yin, Shaoyi; Ergenç, Belgin; Hameurlain, … - In: International Journal of Data Warehousing and Mining (IJDWM) 13 (2017) 3, pp. 47-72

The goal of query optimization in query federation over linked data is to minimize the response time and the completion time. Communication time has the highest impact on them both. Static query optimization can end up with inefficient execution plans due to unpredictable data arrival rates and...

Persistent link: https://www.econbiz.de/10012044231

Distributed Query Plan Generation using Cuckoo Search Algorithm

Yadav, Monika; Kumar, T. V. Vijay - In: International Journal of Energy Optimization and … 6 (2017) 1, pp. 86-100

Query processing in distributed databases involves data transmission amongst sites capable of providing answers to a … distributed query. For this, a distributed query processing strategy, which generates efficient query processing plans for a given … distributed query. As a result, generating efficient query processing plans, from amongst all possible query plans, becomes a …

Persistent link: https://www.econbiz.de/10012044557

Incorporating Spatial Queries into Semantic Sensor Streams on the Internet of Things

Eom, Sungkwang; Lee, Kyong-Ho - In: Journal of Database Management (JDM) 28 (2017) 4, pp. 24-39

In the Internet of Things (IoT) environment, the use of sensors and sensor readings is significant in research and industry. The number of sensors is increasing exponentially, adding a tremendous amount of data to the Web. Therefore, the efficient management of sensors and observation data is...

Persistent link: https://www.econbiz.de/10012048947

Distributed Query Plan Generation Using Firefly Algorithm

Kumar, T.V. Vijay; Singh, Neha; Prakash, Jay - In: International Journal of Organizational and Collective … 6 (2016) 1, pp. 29-50

A large number of queries are posed daily against the distributed databases spread across the globe. Query processing …

Persistent link: https://www.econbiz.de/10012046742

Raghavendra S.; Nithyashree K.; Geeta C.M.; Buyya, Rajkumar - In: International Journal of Organizational and Collective … 6 (2016) 3, pp. 33-49

This paper involves a cloud computing environment in which the dataowner outsource the similarity search service to a third party service provider. Privacy of the outsourced data is important because they may be confidential data. The data should be made available to the authorized client...

Persistent link: https://www.econbiz.de/10012046750

Management of distributed knowledge encapsulated in embedded devices

Ferrer, Borja Ramis; Iarovyi, Sergii; Gonzalez, Luis; … - In: International journal of production research 54 (2016) 17/18, pp. 5434-5451

Persistent link: https://www.econbiz.de/10011530250

Zeus : a distributed triple store for proactive SPARQL queries

Leida, Marcello; Chu, Andrej - In: International journal of business process integration … 7 (2014/15) 1, pp. 34-48

Persistent link: https://www.econbiz.de/10010395049

Analogy Queries in Information Systems — A New Challenge

Lofi, Christoph - In: Journal of Information & Knowledge Management (JIKM) 12 (2013) 03, pp. 1350021-1

Besides the tremendous progress in web-related technologies, interfaces to access the web or large information systems have largely stayed at the level of keyword searches and categorical browsing. This paper introduces analogy queries as one of the essential techniques required to bridge the...

Persistent link: https://www.econbiz.de/10011010959

Analogy queries in information systems : a new challenge

Lofi, Christoph - In: Journal of information & knowledge management : JIKM 12 (2013) 3, pp. 1-13

Persistent link: https://www.econbiz.de/10010188594