The management of voluminous data through its life-cycle is fundamental to the realisation of smart cities. No Hence, in contrast to existing surveys on smart cities, we provide a data-centric perspective, describing the fundamental data management techniques employed to ensure consistency, interoperability, granularity, and reusability of the data generated by the underlying for smart cities.

Essentially, the data lifecycle in a smart city is dependent on tightly coupled data management with cross-cutting layers of data security and privacy and supporting infrastructure. We, therefore, identify techniques employed for data security and privacy and discuss the networking and computing technologies that enable smart cities. We highlight the achievements in realizing various aspects of smart cities, present the lessons learned, and identify limitations and research challenges.