Semantics of variables.

["Moberg Dale" <dmoberg@axway.com>]

1.      Semantics of variables.

The semantics of variables are not completely clear to me. It seems to me that the exact use of variables may and should be defined by process designers before starting to modeling with ebBP. Some of the things that would have to be specified are:

1.      What does a Variable actually consist of?
On page 77, ebBP standard states:
A Variable MAY have a duration, a type and, where applicable, a default value.

2.      Which languages are admissible for specifying variables?

3.      Are there any scoping rules for variables?

4.      Are there any synchronization primitives for accessing a variable concurrently or is concurrent access forbidden?