Page 79 - Big data - Concept and application for telecommunications

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Figure 7-4 illustrates the case where the intermediator imports and manipulates data from multiple data
sources (Data supplier and Big data service provider S). Data broker I in the intermediator provides meta-
information registry. The big data service provider I provides a metadata and service catalogue to the data
target.

Between a data source and an intermediator, two types of exchange interaction scenarios are shown as
follows:

1) EXSC: Data supplier → Big data service provider;

2) EXIW: Big data service provider → Big data service provider.

Figure 7-4 – Import of intermediary exchange pattern

Between the intermediator and the data target in Figure 7-5, data broker I in the intermediator provides a
metadata and service catalogue to the data target, and three types of scenarios (EXSC, EXIW, EXPU in
clause 7.1.1) are used.

Figure 7-5 – Export of intermediary exchange pattern using internal data broker

The case of intermediary exchange pattern, intermediator may publish meta-information to the external
online registry for data sharing. In Figure 7-6, Data supplier I and Big data service provider I publish metadata
and big data service catalogue to data broker I. Data broker I re-publishes the information to the external

Moving data – Data exchange and data flow 71