ODM: How to link DFD Information Stores to Logical Model Entities

Question

I have created a hierarchy of DFDs for my system :).
Some of the DFDs have Information stores on them.
Now I want to specify the Entities in each InformationStore.
I'd like to do this by linking the Information Stores to the Entities I have defined already in the Logical model/ERD.
However... in the Information Store Properties dialog box in the Entities section there is just a [xyz] button ??
I can't see how to link the Information stores on the DFD to my existing Entities.
I was epxecting to see + and - buttons and a dialog box that allowed me to select the Entities I have already created ?
Help !
(are Information Structures somehow involved as they have the + and - buttons) ??

Answer 1

Not good, because I want the Logical Model to drive the processes, not the other way around. The tool seems to be implementing a version of systems analysis that I can trace to DeMarco (1979). This was discovered to be sub-optimal, and documented as such by Flavin (1981), and McMenamin and Palmer (1984). Palmer's later work (unfortunately, mostly unpublished) showed in more detail exactly how the Logical Model should drive the Process Models, not the other way around.
Ideally, an Information Store could be associated to an Entity, and, when the analyst was ready (not before), balancing reports could be run to identify situations where the Entity had attributes that were never created, or never read. Other CASE tools have been able to do this for the last 20 years; it's not rocket science.
I would characterize the way the tool works now as "program-centric" rather than "data-centric."
By analogy, it reminds of a different, but also common programmer behavior, namely pestering the DBAs to denormalize everything, because it saves them (the programmers) from having to code joins.
Don't let programmers drive software methods, or the supporting software tools.
Mark