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table [package] On-board computer control [allocations]
type name end relation end type name
port k:Card readerPort from allocateStructure to port r:RS232
action Transmit card data from allocateBehavior to block Customer card
action Read customer card from allocateBehavior to block Card reader
action Identify customer from allocateBehavior to block On-board
computer control
FIGURE 4-27
Allocation relationships in matrix notation.
matrix [package] On-board computer control [allocations]
Source Target
r:RS232 Customer card Card reader On-board computer control
k:Card readerPort allocate
Transmit customer data allocate
Read customer card allocate
Identify customer allocate
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(association). In addition to the purely static structure, blocks also describe operations
(i.e., behavior they can execute).
Formally blocks are stereotyped classes. Apart from some notation differences,
the same as described in the UML chapter applies to them: SysML uses the term
block defi nition diagram instead of class diagram (as in UML; Section 3.


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