Share options analogy
Refer to Figure B-6, to follow this explanation:
Figure B-6. Sharing VSAM data sets
Once upon a time, there were two lands (MVS A and MVS B) separated by a river. All the culture accumulated by the people living there was stored in two shared VSAM data sets strategically located in the middle of the separating river. In each land, there were two sets of people, the round-head and the square-head (pay attention that each set lives on both sides of the river). Each head shaped people used their own data set (black data set for the square and white data set for the round head). The data sets were accessed by students, the ...
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