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6.1.1 User view for BDaaS architecture
The user view of BDaaS (See [ITU-T Y.3600]) identifies the system context including roles, sub-roles and
activities as well as data and service flows as shown in Figure 6-1.
Figure 6-1 – Cloud computing based big data system context
6.1.2 Functional view for BDaaS
The functional architecture of cloud computing in [ITU-T Y.3502] describes functional components in terms
of a layering framework where specific types of functions are grouped into each layer and where there are
interfaces between the functional components in successive layers.
The functional components for BDaaS represent sets of functions that are necessary to perform the BDaaS
activities for various roles and sub-roles.
6.1.3 Cross-cutting aspects for BDaaS
Cross-cutting aspects include both architectural and operational considerations. Cross-cutting aspects for
BDaaS apply to multiple elements within the description of the functional architecture or in connection with
its operation as an instantiated system. These cross-cutting aspects for BDaaS are shared issues across roles,
activities and functional components.
6.2 Relationship between user view and functional view
Figure 6-2 illustrates the relationship between the user view and functional view for BDaaS.
Basics of Big data 41
