92 Big Data Computing
important to take account of issues related to the concurrent access and thus
data consistency, while in social media and smart cities it is important to
provide on-demand and multidevice access to information, graphs, real-time
conditions, etc. A exible visual rendering (distributions, pies, histograms,
trends, etc.) may be a strongly desirable features to be provided, for many
scientic and research applications, as well as for nancial data and health
care (e.g., for reconstruction, trend analysis, etc.). Faceted query results can
be very interesting for navigating in mainly text-based Big Data as for edu-
cational and cultural heritage application domains. Graph navigation among
resulted relationships can be an av ...