System of systems
System 0.1
Subsystem
Subsystem
System 0.2
1.0
1.1
1.2
1.1.1
Granularity
Abstraction
1.1.2
Assemblies
Assemblies
1.1.2.1
1.1.2.2
Subassemblies
Subassemblies
1.1.2.1.1
1.1.2.2.2
Component
Component
1.1.2.1.1.1
1.1.2.2.1.2
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Engineering Systems Integration
FIgure 6.2
Granularity and abstraction.
local function to execute (or be available) as well as a system-level function
(or thread). Overlapping and underlapping functions (or processes) signify
problems in the design or construction of objects. These problems may or
may not be detected during design reviews or walkthrough once development has begun. If missed before testing, they can appear as a performance
measurement that is out of range set by the specifications. All such overlaps
or underlaps are detected during integration when local and end-to-end
system-level functions are to be demonstrated.