On Thu, 17 Jan 2019, David G. Johnston wrote:

Off the top of my head (and this is a model I am quite familiar with
even if I'm doing this email at speed):

I'd suggest an actual activity table:

David,

  Adrian's suggestion of a Contacts table column called 'active' having a
boolean data type seems to me to be more compact. Testing active = true as a
condition in the WHERE clause will display only those People with active
contact needs.

Thanks very much,

Rich

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