Page 78 - Big data - Concept and application for telecommunications

2 Big data - Concept and application for telecommunications 2

3) EXPU: Providing | using big data service (Big data service provider → Big data service customer): a
big data service customer uses big data service's output from a big data service provider.
NOTE – Although not shown in the figure, data supplier and data broker are a sub-role of data provider as
per [ITU-T Y.3600].
In Figure 7-1, the data broker provides meta-information (data catalogue for dataset) registry to data source
(Data supplier and Big data service provider A), and also provides a service catalogue to the data target (Big
data service provider B and Big data service customer). The data target searches data from the data broker
on the data source's side.

A data source publishes metadata to an online registry for data sharing. In Figure 7-2, the data supplier and
the big data service provider (Big data service provider A) on the data source's side publish metadata and big
data service catalogue to the external data broker. The big data service provider (Big data service provider B)
and the Big data service customer on the data target's side search data or big data service on the external
data broker and use them.

Figure 7-2 – Direct exchange using an external data broker
7.1.2 Intermediary exchange pattern

The intermediary exchange pattern is composed of a set of direct exchange patterns. In Figure 7-3, for each
direct exchange pattern involving a data source, the intermediator entity is acting as data target while for
each direct exchange pattern involving a data target, the intermediator entity is acting as a data source.

Figure 7-3 – Intermediary exchange

In an intermediary exchange, the intermediator may modify data received from data sources by pre-
processing, integrating, analysing and visualising data.
NOTE – In Figure 7-4, the intermediator entity is acting as a big data service provider and a data broker.

70 Moving data – Data exchange and data flow