Qin, Yongrui, Sheng, Quan Z., Falkner, Nickolas J. G., Dustdar, Schahram, Wang, Hua-Wei and Vasilakos, Athanasios V. (2016) When things matter: A survey on data-centric Internet of Things. Journal of Network and Computer Applications, 64. pp. 137-153. ISSN 1084-8045
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With the recent advances in radio-frequency identification (RFID), low-cost wireless sensor devices, and Web technologies, the Internet of Things (IoT) approach has gained momentum in connecting everyday objects to the Internet and facilitating machine-to-human and machine-to-machine communication with the physical world. IoT offers the capability to connect and integrate both digital and physical entities, enabling a whole new class of applications and services, but several significant challenges need to be addressed before these applications and services can be fully realized. A fundamental challenge centers around managing IoT data, typically
produced in dynamic and volatile environments, which is not only extremely large in scale and volume, but
also noisy and continuous. This paper reviews the main techniques and state-of-the-art research efforts in IoT from data-centric perspectives, including data stream processing, data storage models, complex event processing, and searching in IoT. Open research issues for IoT data management are also discussed.

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