We present a novel system called Extrac for querying a large database of road traffic information. Such traffic data are collected from an ITS (Intelligent transportation systems) center of Busan and represents speed values of all road segments of Busan ...

Cloud-Service Providers (CSPs) can now handle heavy workloads by occasionally renting resources from public clouds. The capabilities and respective lease prices of such infrastructure may significantly vary over time. In this environment, two distinct ...

As the quantity of data stored in legacy enterprise systems increases, the re-engineering of the database layer in such systems becomes more important. Data is often the most valuable artefact in a system and unlike software it may not be replaceable. ...

Database management systems (DBMS) are typically tuned for high performance and scalability. Nevertheless, carbon footprint and energy efficiency are also becoming increasing concerns. Unfortunately, existing studies mainly present theoretical ...

Cloud computing is not just a promising approach to the service provisioning: nowadays it represents the reference model in such field. Several cloud service providers have emerged as de facto standards and an increasing number of companies are choosing ...

This research analyzes the performance of a distributed cloud broker in a live traffic scenario, utilizing a government owned private federated cloud. The paper explores the use case when a cloud broker assists the provisioning of services to ...