[DDI-SRG] InstrumentType ControlConstructReference JEREMY DAN READ THIS

Wendy Thomas wlt at pop.umn.edu
Fri Feb 22 14:29:34 EST 2008


Before entering a bug I want to know if it really is a bug or the 
structure was intended.

InstrumentType currently contains a ControlConstructReference 0..1 
(allowing for reference to an instrument that has not had its contents 
described in DDI)

ControlConstructScheme contains ControlConstruct 1..n implying that 
multiple independent control sequences can be stored in a single 
ControlConstructScheme and the Instrument is referencing the top construct 
of its initiating sequence.

If this is how its supposed to be, fine, I'll make sure it is documented 
in this way.

However, if a ControlConstructScheme was intended to contain a single 
master seqence then InstrumentType should change ControlConstructReference 
to ControlConstructSchemeReference and ControlConstructScheme should 
change its ControlConstruct to 1..1 forcing a single starting point for 
the control sequence.

Which is correct? You may have discussed this while I was at the Doctor's.
I hope Jeremy and Dan are paying attention to this email ;)

Wendy

Wendy L. Thomas                          Phone: +1 612.624.4389
Data Access Core Director		 Fax:   +1 612.626.8375
Minnesota Population Center              Email: wlt at pop.umn.edu
University of Minnesota
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225 19th Avenue South
Minneapolis, MN 55455


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