Information Technology Reference
In-Depth Information
computational viewpoint
needs failure
transparency
CO
1
CO
3
objects that
have similar
lifecycles
CO
2
bindingobject
1
CO
4
replica
set
BEO
1
BEO
3a
BEO
3b
ch
1
cluster
ch
5
ch
4
ch
2
BEO
2
BEO
4
ch
3
engineering viewpoint
computational object
CO
bindingobject
computational binding object
object correspondence
computational primitive binding
basic engineering object
engineering channel
BEO
binding correspondence
engineering primitive binding
FIGURE 7.1: Mandatory computational to engineering correspondences.
figure 7.1. The aim here is to create an engineering structure that will be able
to evolve in a flexible way to deal with changes in the environment and map
cleanly at all times onto the computational design it is supporting.
One of the mechanisms that may complicate this mapping is the support
of replication. The various constraints therefore enforce simplicity in the cases
where there is no replication so as to avoid adding extra complexity to the
replicated situations. This is achieved by saying that, unless there is replica-
tion, there is a one-to-one correspondence between computational objects and
